Chemistry: The Central Science (13th Edition) 13th Edition

ISBN 13

978-0321910417

ISBN 10

0321910419

Authors

Bruce E. Bursten, Catherine Murphy, H. Eugene LeMay, Matthew E. Stoltzfus, Patrick Woodward, Theodore E. Brown

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241 documents found.

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A Weak Electrolyte Exists Predominantly As ________ In Solution

1) In the resonance form of ozone shown below, the formal charge on the central oxygen atom is ________. A) 0 B) +1 C) -1 D) +2 E) -2 Answer: B Answer: B Answer: B 2) Of the following molecules, only ________ is polar. A) CCl4 B) BCl3 C) NCl3 D) BeCl2 E) Cl2 Answer: C Answer: C Answer: C 3) An FM

Chemistry: The Central Science 13th Edition

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CAS CH 100 Midterm

1) Determine the freezing point (oC) of a 0.015 molal aqueous solution of MgSO4. Assume i = 2.0 for MgSO4. The molal freezing-point-depression constant of water is 1.86 oC/m. A) -0.056 B) -0.028 C) -0.17 D) -0.084 E) 0.000 Answer: A Answer: A Answer: A 2) A 4.50-g sample of liquid water at 25.0 C is heated by

Chemistry: The Central Science 13th Edition

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CAS CH 152

1) A correct name for Fe(NO3)2 is ________. A) iron nitrite B) ferrous nitrite C) ferrous nitrate D) ferric nitrite E) ferric nitrate Answer: C Answer: C Answer: C 2) A buffer solution with a pH of 4.63 is prepared with 0.14 M formic acid and ________ M sodium formate. The Ka of formic acid is 1.8 x 10-4. A)

Chemistry: The Central Science 13th Edition

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CAS CH 155 Midterm 2

1) Predict the product in the combination reaction below. Al (s) + N2 (g) ________ A) AlN B) Al3N C) AlN2 D) Al3N2 E) AlN3 Answer: A Answer: A Answer: A 2) The nucleus of an atom does not contain ________. A) protons B) protons or neutrons C) neutrons D) subatomic particles E) electrons Answer: E Answer: E Answer: E 3) Of the following

Chemistry: The Central Science 13th Edition

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CAS CH 168 Test 1

1) Which species has 18 electrons? A) 39K B) 32S2- C) 35Cl D) 27Al3+ E) 64Cu2+ Answer: B Answer: B Answer: B 2) The value of G o at 261.0 oC for the formation of phosphorous trichloride from its constituent elements, P2 (g) + 3Cl2 (g) --> 2PCl3 (g) is ________ kJ/mol. At 25.0 oC for this

Chemistry: The Central Science 13th Edition

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CAS CH 173 Quiz 3

1) Calculate the percentage by mass of hydrogen in PtCl2(NH3)2. A) 1.558 B) 1.008 C) 0.672 D) 0.034 E) 2.016 Answer: E Answer: E Answer: E 2) The rate of a reaction depends on ________. A) collision frequency B) collision energy C) collision orientation D) all of the above E) none of the above Answer: D Answer: D Answer: D 3) Which of the following is not

Chemistry: The Central Science 13th Edition

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CAS CH 202

1) In which of the following aqueous solutions would you expect CuBr to have the highest solubility? A) 0.0100 M KBr B) 0.040 M CuNO3 C) 0.030 M NaBr D) 0.020 M LiBr E) CuBr will have the same solubility in all solutions. Answer: A Answer: A Answer: A 2) Oxides of most nonmetals combine with base to

Chemistry: The Central Science 13th Edition

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CAS CH 214 Midterm 2

1) Which one of the following processes produces a decrease in the entropy of the system? A) freezing of Fe(l) into Fe(s) B) evaporation of liquid ethanol into gaseous ethanol C) dissolution of LiOH(s) in water D) melting ice to form water E) mixing of two gases into one container Answer: A Answer: A Answer: A 2) The H-C-H

Chemistry: The Central Science 13th Edition

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CAS CH 234 Final

1) Resonance structures differ by ________. A) number and placement of electrons B) number of electrons only C) placement of atoms only D) number of atoms only E) placement of electrons only Answer: E Answer: E Answer: E 2) The ion NO- has ________ valence electrons. A) 15 B) 14 C) 16 D) 10 E) 12 Answer: E Answer: E Answer: E 3) The oxidation number of N

Chemistry: The Central Science 13th Edition

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CAS CH 254

1) Which of the following are decomposition reactions? 1. CH4 (g) + O2 (g) CO2 (g) + H2O (l) 2. CaO (s) + CO2 (g) CaCO3 (s) 3. Mg (s) + O2 (g) MgO (s) 4. PbCO3 (s) PbO (s) + CO2 (g) A) 1, 2, and 3 B) 4 only C) 1, 2, 3, and 4 D)

Chemistry: The Central Science 13th Edition

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CAS CH 274 Quiz 2

1) In humans, what percent of absorbed iron is found in blood? A) 15 B) 25 C) 40 D) 60 E) 75 Answer: E Answer: E Answer: E 2) All the elements in group 8A are gases at room temperature. Of all the groups in the periodic table, only group ________ contains examples of elements that are gas, liquid,

Chemistry: The Central Science 13th Edition

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CAS CH 291 Quiz

1) The pH of a 0.15 M aqueous solution of NaZ (the sodium salt of HZ) is 10.7. What is the Ka for HZ? A) 1.6 x 10-6 B) 6.0 x 10-9 C) 8.9 x 10-4 D) 1.3 x 10-12 E) 3.3 x 10-8 Answer: B Answer: B Answer: B 2) Elements in Group 6A

Chemistry: The Central Science 13th Edition

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CAS CH 310 Quiz

1) Which of the following ions will act as a weak base in water? A) HS- B) F- C) NO2 - D) ClO- E) All of the above will act as a weak base in water. Answer: E Answer: E Answer: E 2) Which combination will produce a precipitate? A) NH4OH (aq) and HCl (aq) B) AgNO3 (aq)

Chemistry: The Central Science 13th Edition

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CAS CH 324 Final

1) The length of the side of a cube having a density of 12.6 g/ml and a mass of 7.65 g is ________ cm. A) 3.20 B) 0.847 C) 1.02 D) 0.584 E) 1.32 Answer: B Answer: B Answer: B 2) A 5.00-g sample of copper metal at 25.0 C is heated by the addition of 133 J of

Chemistry: The Central Science 13th Edition

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CAS CH 327

1) Air containing 4% H2 can be explosive. Answer: TRUE Answer: TRUE Answer: TRUE 2) The wavelength of radio waves can be longer than a football field. Answer: TRUE Answer: TRUE Answer: TRUE 3) In some molecules and polyatomic ions, the sum of the valence electrons is odd and as a result the octet rule fails. Answer: TRUE Answer: TRUE Answer:

Chemistry: The Central Science 13th Edition

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CAS CH 339 Final

1) Of the following, which is most likely to form interstitial carbides? A) active metals B) transition metals C) boron and silicon D) alkaline earth metals E) alkali metals Answer: B Answer: B Answer: B 2) A common English set of units for expressing velocity is miles/hour. The SI unit for velocity is ________. A) km/hr B) km/s C) m/hr D) m/s E) cm/s Answer:

Chemistry: The Central Science 13th Edition

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CAS CH 369 Midterm 2

1) The rate law for a reaction is rate = k[A][B] Which one of the following statements is false? A) The reaction is first order overall. B) The reaction is first order in A. C) The reaction is first order in [B]. D) k is the reaction rate constant E) If [A] is doubled, the reaction rate

Chemistry: The Central Science 13th Edition

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CAS CH 373 Midterm

1) Which one of the following substances would be the most soluble in CCl4? A) C4H10 B) Li2O C) NH3 D) HCl E) CH3CH2CH2OH Answer: A Answer: A Answer: A 2) According to valence bond theory, which orbitals overlap in the formation of the bond in Br2? A) 3s B) 3p C) 4s D) 4p E) 3d Answer: D Answer: D Answer: D 3) Of

Chemistry: The Central Science 13th Edition

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CAS CH 374

1) Which one of the following configurations depicts an excited carbon atom? A) 1s22s22p13s1 B) 1s22s22p3 C) 1s22s22p1 D) 1s22s23s1 E) 1s22s22p2 Answer: A Answer: A Answer: A 2) A carbonyl compound contains ________. A) a carbon-oxygen double bond B) a carbon-oxygen triple bond C) a carbon atom with a lone pair of electrons D) a carbon-carbon triple

Chemistry: The Central Science 13th Edition

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CAS CH 387 Quiz 3

1) A solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water. The density of the resulting solution is 1.05 g/mL. The concentration of CaCl2 in this solution is ________ molal. A) 0.214 B) 0.569 C) 5.70 D) 63.2 E) 1.76 Answer: B Answer: B Answer: B 2) The sterilizing action of chlorine in water is

Chemistry: The Central Science 13th Edition

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CAS CH 410 Final

1) Which element has the largest bonding atomic radius? A) scandium B) titanium C) vanadium D) chromium E) manganese Answer: A Answer: A Answer: A 2) The rate constant for this reaction is ________ s-1. A) 6.9 x 10-2 B) 3.0 x 10-2 C) 14 D) 0.46 E) 4.0 x 102 Answer: A Answer: A Answer: A 3) Chemical treatment of municipal water supplies commonly

Chemistry: The Central Science 13th Edition

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CAS CH 428 Quiz 1

1) Under ordinary conditions, a substance will sublime rather than melt if its triple point occurs at a pressure above atmospheric pressure. Answer: TRUE Answer: TRUE Answer: TRUE 2) Ammonia is a strong base. Answer: FALSE Answer: FALSE Answer: FALSE 3) Xenon can have oxidation states of 2, 4, 6, and 8. Answer: TRUE Answer: TRUE Answer: TRUE 4) HNO2 is a strong

Chemistry: The Central Science 13th Edition

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CAS CH 472 Midterm 1

1) Thermodynamic Quantities for Selected Substances at 298.15 K (25 oC) The value of G o at 25 oC for the decomposition of calcium chloride into its constituent elements, CaCl2 (s) --> Ca (s) + Cl2 (g) is ________ kJ/mol. A) -795.8 B) +795.8 C) +763.7 D) +748.1 E) -748.1 Answer: D Answer: D Answer: D 2) Which of the following

Chemistry: The Central Science 13th Edition

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CAS CH 554 Quiz

1) Transuranium elements have atomic numbers greater than ________. A) 90 B) 91 C) 92 D) 93 E) 94 Answer: C Answer: C Answer: C 2) What is the conjugate base of OH-? A) O2 B) O- C) H2O D) O2- E) H3O+ Answer: D Answer: D Answer: D 3) Which of the following elements is a nonmetal? A) At B) Rh C) Tc D) Mo E) Zr Answer: A Answer:

Chemistry: The Central Science 13th Edition

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CAS CH 556 Test 1

1) In order to produce sp3 hybrid orbitals, ________ s atomic orbital(s) and ________ p atomic orbital(s) must be mixed. A) one, two B) one, three C) one, one D) two, two E) two, three Answer: B Answer: B Answer: B 2) Atomic radius generally decreases as we move ________. A) down a group and from right to left across a

Chemistry: The Central Science 13th Edition

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CAS CH 574 Quiz 1

1) Alkali metals tend to be more reactive than alkaline earth metals because ________. A) alkali metals have lower densities B) alkali metals have lower melting points C) alkali metals have greater electron affinities D) alkali metals have lower ionization energies E) Alkali metals are not more reactive than alkaline earth metals. Answer: D Answer: D Answer: D 2)

Chemistry: The Central Science 13th Edition

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CAS CH 583 Quiz

1) Which one of the following substances is produced during the reaction of an acid with a metal hydroxide? A) H2 B) H2O C) CO2 D) NaOH E) O2 Answer: B Answer: B Answer: B 2) Acetic acid is a weak acid that dissociates into the acetate ion and a proton in aqueous solution: HC2H3O2 (aq) C2H3O2

Chemistry: The Central Science 13th Edition

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CAS CH 588 Quiz

1) The value of H for the reaction below is -6535 kJ. ________ kJ of heat are released in the combustion of 16.0 g of C6H6 (l)? 2C6H6 (l) + 15O2 (g) 12CO2 (g) + 6 H2O (l) A) 1.34 x 103 B) 5.23 x 104 C) 669 D) 2.68 x 103

Chemistry: The Central Science 13th Edition

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CAS CH 594 Homework

1) In the absence of magnetic or electric fields, cathode rays ________. A) do not exist B) travel in straight lines C) cannot be detected D) become positively charged E) bend toward a light source Answer: B Answer: B Answer: B 2) In which aqueous system is CaF2least soluble? A) H2O B) 0.5 M HF C) 0.2 M HF D) 1.0 M HNO3

Chemistry: The Central Science 13th Edition

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CAS CH 596 Quiz 1

1) The bond angle marked a in the following molecule is about ________. A) 109.5 B) 60 C) 180 D) 120 E) 90 Answer: D Answer: D Answer: D 2) For a given reaction, H = +74.6 kJ/mol, and the reaction is spontaneous at temperatures above the crossover temperature, 449 K. The value of S = ________ J/mol K,

Chemistry: The Central Science 13th Edition

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CAS CH 602 Quiz

1) At what speed (m/s) must a 3.0-mg object be moving in order to have a de Broglie wavelength of 5.4 X 10-29 m? A) 1.6 X 10-28 m/s B) 3.9 X 10-4 m/s C) 2.0 X 1012 m/s D) 4.1 m/s E) 6.3 m/s Answer: D Answer: D Answer: D 2) There are ________ protons, ________ electrons, and ________

Chemistry: The Central Science 13th Edition

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CAS CH 641

1) Which of the following liquids will have the lowest freezing point? A) pure H2O B) aqueous glucose (0.60 m) C) aqueous sucrose (0.60 m) D) aqueous FeI3 (0.24 m) E) aqueous KF (0.50 m) Answer: E Answer: E Answer: E 2) At 333 K, which of the pairs of gases below would have the most nearly identical rates

Chemistry: The Central Science 13th Edition

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CAS CH 651

1) The value of E for a system that performs 139 kJ of work on its surroundings and gains 54kJ of heat is ________ kJ. A) -85 B) 193 C) 7506 D) 85 E) -193 Answer: A Answer: A Answer: A 2) The reaction of 50 mL of Cl2 gas with 50 mL of C2H4 gas via the equation: Cl2

Chemistry: The Central Science 13th Edition

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CAS CH 683 Midterm 2

1) A sample of air from a home is found to contain 7.2 ppm of carbon monoxide. This means that if the total pressure is 695 torr, then the partial pressure of CO is ________ torr. A) 5.0 103 B) 5.0 10-3 C) 5.0 D) 1.0 104 E) 9.7 107 Answer: B Answer:

Chemistry: The Central Science 13th Edition

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CAS CH 710

1) The molecular formula of a compound is always ________ the empirical formula. A) more complex than B) different from C) an integral multiple of D) the same as E) simpler than Answer: C Answer: C Answer: C 2) Which formula/name pair is incorrect? A) Mn(NO2)2manganese(II) nitrite B) Mg(NO3)2magnesium nitrate C) Mn(NO3)2manganese(II) nitrate D) Mg3N2magnesium nitrite E) Mg(MnO4)2magnesium permanganate Answer: D Answer: D Answer: D 3) A valid

Chemistry: The Central Science 13th Edition

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CAS CH 722 Homework

1) The gold foil experiment performed in Rutherford's lab ________. A) confirmed the plum-pudding model of the atom B) led to the discovery of the atomic nucleus C) was the basis for Thomson's model of the atom D) utilized the deflection of beta particles by gold foil E) proved the law of multiple proportions Answer: B Answer:

Chemistry: The Central Science 13th Edition

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CAS CH 763 Quiz 2

1) Using the data in the table, which of the conjugate acids below is the strongest acid? A) NH4 + B) C5H5NH+ C) H3NOH+ D) NH3CH3 + E) NH4 + and NH3CH3 + Answer: B Answer: B Answer: B 2) A substance with unpaired electrons will be ________. A) slightly attracted to a magnet B) slightly repelled by a

Chemistry: The Central Science 13th Edition

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CAS CH 797 Quiz 2

1) Consider the following equilibrium. 2 SO2 (g) + O2 (g) 2 SO3 (g) The equilibrium cannot be established when ________ is/are placed in a 1.0-L container. A) 0.25 mol SO2 (g) and 0.25 mol O2 (g) B) 0.75 mol SO2 (g) C) 0.25 mol of SO2 (g) and 0.25 mol of SO3 (g) D) 0.50

Chemistry: The Central Science 13th Edition

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CAS CH 804 Midterm 1

1) A valid Lewis structure of ________ cannot be drawn without violating the octet rule. A) PO4 3- B) SiF4 C) CF4 D) SeF4 E) NF3 Answer: D Answer: D Answer: D 2) Alkenes have the general formula ________. A) CnH2n B) CnH2n-2 C) CnH2n+2 D) CnHn E) C2nHn Answer: A Answer: A Answer: A 3) Of the following

Chemistry: The Central Science 13th Edition

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CAS CH 828

1) Xenon has been shown to form compounds only when it is combined with ________. A) something with a tremendous ability to remove electrons from other substances B) another noble gas C) something with a tremendous ability to donate electrons to other substances D) an alkali metal E) an alkaline earth metal Answer: A Answer: A Answer: A 2)

Chemistry: The Central Science 13th Edition

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CAS CH 833 Quiz 2

1) A reaction that is spontaneous as written ________. A) is very rapid B) will proceed without outside intervention C) is also spontaneous in the reverse direction D) has an equilibrium position that lies far to the left E) is very slow Answer: B Answer: B Answer: B 2) Which of the following is a valid set of four

Chemistry: The Central Science 13th Edition

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CAS CH 838 Quiz 3

1) Of the following atoms, which has the largest first ionization energy? A) K B) Rb C) Sr D) Ca E) Ba Answer: D Answer: D Answer: D 2) For the reaction 2 C4H10 (g) + 13 O2 (g) --> 8 CO2 (g) + 10 H2O (g) H o is -125 kJ/mol and S o is +253 J/K mol. This reaction

Chemistry: The Central Science 13th Edition

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CAS CH 844 Quiz

1) The relationship between the concentrations of reactants and products of a system at equilibrium is given by the law of mass action. Answer: TRUE Answer: TRUE Answer: TRUE 2) Possible shapes of AB3 molecules are linear, trigonal planar, and T-shaped. Answer: FALSE[/cpmembership] Answer: FALSE[/cpmembership] Answer: FALSE[/cpmembership] 3) The bond energy of oxygen is higher than that of

Chemistry: The Central Science 13th Edition

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CAS CH 883 Quiz 3

1) 3.2 cm3 = 0.0032 L Answer: TRUE Answer: TRUE Answer: TRUE 2) Two deviations of real gases from ideal gases which are treated in the van der Waals equation are finite molecular volume and non-zero molecular attractions. Answer: TRUE Answer: TRUE Answer: TRUE 3) Gamma radiation only changes the atomic number but not the mass number of

Chemistry: The Central Science 13th Edition

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CEM 108 Midterm 2

1) When a metal gains an electron, the process is endothermic. Answer: FALSE Answer: FALSE Answer: FALSE 2) The reduction of O2 by sodium hydride produces lye. Answer: TRUE Answer: TRUE Answer: TRUE 3) In radioactive dating, the ratio of carbon-12 to carbon-14 is related to the time of death of the animal or plant under investigation. Answer: FALSE Answer:

Chemistry: The Central Science 13th Edition

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CEM 111 Test 1

1) Thermodynamic Quantities for Selected Substances at 298.15 K (25 oC) The value of S o for the catalytic hydrogenation of acetylene to ethene, C2H2 (g) + H2 (g) --> C2H4 (g) is ________ J/K mol. A) +18.6 B) +550.8 C) +112.0 D) -112.0 E) -18.6 Answer: D Answer: D Answer: D 2) The uncertainty principle states that ________. A) matter and

Chemistry: The Central Science 13th Edition

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CEM 114

1) The reaction 4Al (s) + 3O2 (g) 2Al2O3 (s) H = -3351 kJ is ________, and therefore heat is ________ by the reaction. A) endothermic, released B) endothermic, absorbed C) exothermic, released D) exothermic, absorbed E) thermoneutral, neither released nor absorbed Answer: C Answer: C Answer: C 2) The correct name for [Cu(NH3)4(H2O)2]2+ is ________. A) diwaterquatraamminecopper (II) B) tetraamminediaquacopper (II) C) diaquatetraammoniumcopper (II) D)

Chemistry: The Central Science 13th Edition

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CEM 138

1) The names of complex anions end in ________. A) -o B) -ium C) -ate D) -ous E) -ic Answer: C Answer: C Answer: C 2) Of the following, the entropy of ________ is the largest. A) B2F4 (g) B) BF3 (g) C) B2H6 (g) D) BCl3 (l) E) B2O3 (s) Answer: A Answer: A Answer: A 3) Which type of liquid crystal is colored and changes color

Chemistry: The Central Science 13th Edition

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CEM 162 Quiz

1) The square of Schrodinger's wave equation is called an orbital. Answer: TRUE Answer: TRUE Answer: TRUE 2) Aldehydes are less reactive than ketones. Answer: FALSE Answer: FALSE Answer: FALSE 3) Radioactive decay is a first order kinetic process. Answer: TRUE Answer: TRUE Answer: TRUE 4) A gas is considered "ideal" if one mole of it in a one-liter container exerts a

Chemistry: The Central Science 13th Edition

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CEM 181 Midterm 2

1) Metal oxides are typically ________ while nonmetal oxides are typically ________. A) basic, amphoteric B) basic, acidic C) amphoteric, basic D) acidic, basic E) amphoteric, acidic Answer: B Answer: B Answer: B 2) Together, liquids and solids constitute ________ phases of matter. A) the compressible B) the fluid C) the condensed D) all of the E) the disordered Answer: C Answer: C Answer: C 3) A mixture

Chemistry: The Central Science 13th Edition

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CEM 214 Test 2

1) The volume of an ideal gas is zero at ________. A) 0 C B) -45 F C) -273 K D) -363 K E) -273 C Answer: E Answer: E Answer: E 2) For an isothermal process, the entropy change of the surroundings is given by the equation: A) S = qsys T B) S = -qsys T C) S = q

Chemistry: The Central Science 13th Edition

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CEM 227

1) Which one of the following atoms has the largest radius? A) In B) Sn C) Sb D) Te E) I Answer: A Answer: A Answer: A 2) What is the FXeF bond angle in XeF2? A) 180 B) 90 C) 109.5 D) 120 E) 60 Answer: A Answer: A Answer: A 3) The ________ orbital is degenerate with 5py in a many-electron atom. A) 5s B) 5px C) 4py

Chemistry: The Central Science 13th Edition

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Cem 239 Test 2

1) A combination of sand, salt, and water is an example of a ________. A) homogeneous mixture B) heterogeneous mixture C) compound D) pure substance E) solid Answer: B Answer: B Answer: B 2) Fuel values of hydrocarbons increase as the H/C atomic ratio increases. Which of the following compounds has the highest fuel value? A) C2H6 B) C2H4 C) C2H2

Chemistry: The Central Science 13th Edition

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Cem 240 Midterm 2

1) Which of the following molecules or ions will exhibit delocalized bonding? A) SO2, SO3, and SO3 2- B) SO3 2- only C) SO2 and SO3 D) SO3 and SO3 2- E) None of the above will exhibit delocalized bonding. Answer: C Answer: C Answer: C 2) Iron has a density of 7.9 g/cm3. What is the

Chemistry: The Central Science 13th Edition

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CEM 252 Test

1) The molecular weight is always a whole-number multiple of the empirical formula weight. Answer: TRUE Answer: TRUE Answer: TRUE 2) The DNA double helix is held together by hydrogen bonds and London dispersion forces. Answer: TRUE Answer: TRUE Answer: TRUE 3) In the reaction BF3 + F---> BF4 - BF3 acts as a Brnsted-Lowry acid. Answer: FALSE Answer: FALSE Answer: FALSE 4)

Chemistry: The Central Science 13th Edition

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CEM 276 Homework

1) The specific heat capacity of lead is 0.13 J/g-K. How much heat (in J) is required to raise the temperature of 15 g of lead from 22 C to 37 C? A) 2.0 J B) -0.13 J C) 5.8 x 10-4 J D) 29 J E) 0.13 J Answer: D Answer: D Answer: D 2) Carbon dioxide is

Chemistry: The Central Science 13th Edition

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CEM 281

1) HA is a weak acid. Which equilibrium corresponds to the equilibrium constant Kb for A-? A) HA (aq) + H2O (l) H2A+ (aq) + OH-(aq) B) A- (aq) + H3O+ (aq) HA (aq) + H2O (l) C) HA (aq) + OH- (aq) H2O (l) + H+ (aq) D) A- (aq) + H2O (l)

Chemistry: The Central Science 13th Edition

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CEM 281 Midterm 2

1) The name of the ionic compound NaBrO4 is ________. A) sodium perbromate B) sodium bromate C) sodium hypobromate D) sodium perbromite E) sodium bromide Answer: A Answer: A Answer: A 2) What is/are the product(s) of photodissociation of molecular oxygen? A) molecular nitrogen B) excited oxygen molecules C) ozone D) ozone and atomic oxygen E) atomic oxygen Answer: E Answer: E Answer: E 3) The combustion of

Chemistry: The Central Science 13th Edition

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Cem 287

1) What is the oxidation state of chromium in [Cr(H2O)4Cl2]+? A) 0 B) +2 C) +3 D) -2 E) -3 Answer: C Answer: C Answer: C 2) Elements in the same group of the periodic table typically have ________. A) similar mass numbers B) similar physical properties only C) similar chemical properties only D) similar atomic masses E) similar physical and chemical properties Answer:

Chemistry: The Central Science 13th Edition

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CEM 292 Quiz 1

1) Calcium is a ________ and silver is a ________. A) nonmetal, metal B) metal, metal C) metalloid, metal D) metal, metalloid E) nonmetal, metalloid Answer: B Answer: B Answer: B 2) Which equation correctly represents the reaction between elemental chlorine and sodium iodide? A) Cl + NaI --> I + NaCl B) Cl- + NaI --> I- + NaCl C) Cl2

Chemistry: The Central Science 13th Edition

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CEM 301 Test

1) 1 picometer = ________ centimeters A) 1 X 1010 B) 1 X 10-10 C) 1 X 108 D) 1 X 10-8 E) 1 X 10-12 Answer: B Answer: B Answer: B 2) The solubility of nitrogen gas in water at 25 oC and a nitrogen pressure of 1.0 atm is 6.9 x 10-4

Chemistry: The Central Science 13th Edition

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CEM 303 Test

1) For molecules of the general formula ABn, n can be greater than four ________. A) for any element A B) only when A is an element from the third period or below the third period C) only when A is boron or beryllium D) only when A is carbon E) only when A is

Chemistry: The Central Science 13th Edition

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Cem 317 Quiz

1) Bombardment of uranium-238 with a deuteron (hydrogen-2) generates neptunium-237 and ________ neutrons. A) 1 B) 2 C) 3 D) 4 E) 5 Answer: C Answer: C Answer: C 2) The reaction used to inflate automobile airbags ________. A) produces sodium gas B) is a combustion reaction C) is a combination reaction D) violates the law of conservation of mass E) is a decomposition

Chemistry: The Central Science 13th Edition

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CEM 329 Test

1) The Ka for formic acid (HCO2H) is 1.8 x 10-4. What is the pH of a 0.20 M aqueous solution of sodium formate (NaHCO2)? A) 11.64 B) 5.48 C) 3.39 D) 8.52 E) 4.26 Answer: D Answer: D Answer: D 2) 30.0 grams of argon and 15.0 grams of xenon are placed in a 170.9 ml container at

Chemistry: The Central Science 13th Edition

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Cem 358

1) Heats of vaporization are greater than heats of fusion. Answer: TRUE Answer: TRUE Answer: TRUE 2) In the formula k = 0.693/t1/2, k is the decay constant. Answer: TRUE Answer: TRUE Answer: TRUE 3) The extent of ionization of a weak electrolyte is increased by adding to the solution a strong electrolyte that has an ion in common

Chemistry: The Central Science 13th Edition

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Cem 365 Test 2

1) What volume (mL) of 142 M phosphoric acid can be neutralized with 0.367 mL of 0.0824 M sodium hydroxide? A) 211 B) 12.9 C) 1900 D) 632 E) 1570 Answer: A Answer: A Answer: A 2) Why does ozone not form in high concentrations in the atmosphere above 50 km? A) Insufficient oxygen is available. B) Insufficient molecules exist for

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 389 Quiz 2

1) Given the data in the table below, Hrxn for the reaction Ca(OH)2 + 2H3AsO4 Ca(H2AsO4)2 + 2H2O is ________ kJ. A) -744.9 B) -4519 C) -4219 D) -130.4 E) -76.4 Answer: D Answer: D Answer: D 2) A ________ liquid crystal has the least order and is the most liquid-like. A) nematic B) smectic C) cholesteric D) smectic B E) smectic C Answer: A Answer: A Answer:

Chemistry: The Central Science 13th Edition

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CEM 401

1) What is the coefficient of H2O when the following equation is completed and balanced? Ba (s) + H2O (l) A) 1 B) 2 C) 3 D) 5 E) Ba(s) does not react with H2O (l). Answer: B Answer: B Answer: B 2) In the Lewis symbol for a nitrogen atom, there are ________ paired and ________ unpaired

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 402 Quiz

1) As a gaseous element condenses, the atoms become ________ and they have ________ attraction for one another. A) less separated, more B) less separated, less C) more separated, more D) more separated, less E) smaller, lesser Answer: A Answer: A Answer: A 2) Of the following substances, only ________ has London dispersion forces as its only intermolecular force. A) CCl4

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 405

1) Which of the following correctly represents the third ionization of aluminum? A) Al2+ (g) + e- Al+ (g) B) Al (g) Al+ (g) + e- C) Al2- (g) + e- Al3- (g) D) Al2+ (g) + e- Al3+ (g) E) Al2+ (g) Al3+ (g) + e- Answer: E Answer: E Answer: E 2) 10.0 grams of

Chemistry: The Central Science 13th Edition

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Cem 406 Quiz 2

1) If chloride is a ligand to a transition metal, it will not be precipitated by silver nitrate. Answer: TRUE Answer: TRUE Answer: TRUE 2) The principal source of the difference in the normal boiling points of ICl (97 oC; molecular mass 162 amu) and Br2 (59 oC; molecular mass 160 amu) is both dipole-dipole

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 415 Midterm 2

1) Which formula/name pair is incorrect? A) FeSO4iron(II) sulfate B) Fe2(SO3)3 iron(III) sulfite C) FeSiron(II) sulfide D) FeSO3iron(II) sulfite E) Fe2(SO4)3 iron(III) sulfide Answer: E Answer: E Answer: E 2) Thermodynamic Quantities for Selected Substances at 298.15 K (25 oC) The value of S o for the oxidation of solid elemental sulfur to gaseous sulfur dioxide, S (s, rhombic) +

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 420 Midterm 1

1) The majority of glucose molecules exist in ring structure. Answer: TRUE Answer: TRUE Answer: TRUE 2) Nitrogen is colorless because the minimum energy to excite an electron is in the ultraviolet section of the spectrum. Answer: TRUE Answer: TRUE Answer: TRUE 3) The color of hemoglobin changes from purple to red when water displaces oxygen on the molecule. Answer:

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 425

1) You have to calculate the volume of a gas sample with mass of 1.000 X 103 g and density of 1.027 g/L, but you have forgotten the formula. Which way of reasoning would help you in finding the correct mass? A) If 1.027 g of a gas takes up a

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 436 Midterm

1) ________ is a unique element and does not truly belong to any family. A) Nitrogen B) Radium C) Hydrogen D) Uranium E) Helium Answer: C Answer: C Answer: C 2) The ________ ion has a noble gas electron configuration. A) Be2+ B) Li2+ C) Li D) Mg2- E) Al2+ Answer: A Answer: A Answer: A 3) Which one of the choices below is

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 438 Midterm

1) What is the coefficient of NO2 when the following disproportionation reaction is balanced? NO2 (g) + H2O (l) --> H+ (aq) + NO3 - (aq) + NO (g) A) 1 B) 2 C) 3 D) 5 E) 4 Answer: C Answer: C Answer: C 2) An example of a form of pure carbon that contains only sp3 hybridized

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 446 Homework

1) The enthalpy change for the following reaction is -483.6 kJ: 2H2 (g) + O2 (g) 2H2O (g) Therefore, the enthalpy change for the following reaction is ________ kJ. 4H2 (g) + 2O2 (g) 4H2O (g) A) -483.6 B) -967.2 C) 2.34 x 105 D) 483.6 E) 967.2 Answer: B Answer: B Answer: B 2) George is making spaghetti

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 458

1) The formula weight of ammonium sulfate ((NH4)2SO4), rounded to the nearest integer, is ________ amu. A) 100 B) 118 C) 116 D) 132 E) 264 Answer: D Answer: D Answer: D 2) How many moles of Co2+ are present in 0.200 L of a 0.400 M solution of CoI2? A) 2.00 B) 0.500 C) 0.160 D) 0.0800 E) 0.0400 Answer: D Answer: D Answer: D 3) The

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 466 Test

1) Which one of the following is not true concerning radon? A) It decays by alpha emission. B) It decays to polonium-218, an alpha emitter. C) It is chemically active in human lungs. D) It has been implicated in lung cancer. E) It is generated as uranium decays. Answer: C Answer: C Answer: C 2) The combustion of propane

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 471 Quiz 3

1) The melting and boiling points of hydrocarbons are determined by ________. A) ion-dipole attraction B) dipole-dipole attraction C) London forces D) hydrogen bonding E) ionic bonding Answer: C Answer: C Answer: C 2) The value of H for the reaction below is -790 kJ. The enthalpy change accompanying the reaction of 0.95 g of S is ________ kJ. 2S

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 476 Test

1) Which one of the following is the formula of hydrochloric acid? A) HClO3 B) HClO4 C) HClO D) HCl E) HClO2 Answer: D Answer: D Answer: D 2) Sulfur dioxide is not released into the atmosphere in any significant amount by ________. A) burning of coal B) bacterial action C) internal combustion engines D) volcanic eruption E) Sulfur dioxide is

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 477

1) Thermodynamic Quantities for Selected Substances at 298.15 K (25 oC) The value of S o for the catalytic hydrogenation of acetylene to ethane, C2H2 (g) + 2H2 (g) --> C2H6 (g) is ________ J/K mol. A) -76.0 B) +440.9 C) -232.5 D) +232.5 E) +28.7 Answer: C Answer: C Answer: C 2) At elevated temperatures, dinitrogen pentoxide decomposes to nitrogen

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 494

1) Which of the following does not have eight valence electrons? A) Ca+ B) Rb+ C) Xe D) Br- E) All of the above have eight valence electrons. Answer: A Answer: A Answer: A 2) A solution containing 10.0 g of an unknown liquid and 90.0 g water has a freezing point of -3.33 oC. Given

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 507 Midterm 1

1) The principal quantum number for the outermost electrons in a Te atom in the ground state is ________. A) 3 B) 4 C) 5 D) 6 E) 7 Answer: C Answer: C Answer: C 2) Gaseous argon has a density of 1.40 g/L at standard conditions. How many argon atoms are in 1.00 L of argon gas at standard

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 510 Test

1) The pH of a 0.25 M aqueous solution of hydrofluoric acid, HF, at 25.0 oC is 2.03. What is the value of Ka for HF? A) 2.0 x 10-9 B) 1.1 x 10-9 C) 6.0 x 10-5 D) 3.5 x 10-4 E) none of the above Answer: D Answer: D Answer: D 2) Aluminum

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 519

1) The conjugate base of NH3 is ________. A) NH2 - B) NH4 + C) NH2OH D) H3O+ E) OH- Answer: A Answer: A Answer: A 2) Of the substances below, the highest fuel value is obtained from ________. A) charcoal B) bituminous coal C) natural gas D) hydrogen E) wood Answer: D Answer: D Answer: D 3) The C O bond dissociation energy in

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 522 Midterm 2

1) A Lewis acid is an electron-pair acceptor, and a Lewis base is an electron-pair donor. Answer: TRUE Answer: TRUE Answer: TRUE 2) The larger the principal quantum number of an orbital, the lower is the energy of the electrons in that orbital. Answer: FALSE Answer: FALSE Answer: FALSE 3) The compound HClO4 is a weak acid. Answer: FALSE Answer:

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 533 Midterm 2

1) The shape of a liquid's meniscus is determined by ________. A) the viscosity of the liquid B) the type of material the container is made of C) the relative magnitudes of cohesive forces in the liquid and adhesive forces between the liquid and its container D) the amount of hydrogen bonding in the

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 551 Quiz 1

1) Which one of the following is not amphoteric? A) Al(OH)3 B) Ca(OH)2 C) Cr(OH)3 D) Zn(OH)2 E) Sn(OH)2 Answer: B Answer: B Answer: B 2) Structural changes around a double bond in the ________ portion of the rhodopsin molecule trigger the chemical reactions that result in vision. A) protein B) opsin C) retinal D) cones E) rods Answer: C Answer:

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 564

1) The elements in the ________ period of the periodic table have a core-electron configuration that is the same as the electron configuration of neon. A) first B) second C) third D) fourth E) fifth Answer: C Answer: C Answer: C 2) The conjugate acid of HSO4 - is ________. A) SO4 2- B) H2SO4 C) HSO4 + D) H+ E)

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 565 Quiz

1) Which of the following correctly represents the electron affinity of bromine? A) Br (g) Br+ (g) + e- B) Br (g) + e- Br- (g) C) Br2 (g) + e- Br- (g) D) Br2 (g) + 2e- 2Br- (g) E) Br+ (g) + e- Br (g) Answer: B Answer: B Answer: B 2) The phase changes B

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 581 Test

1) A borane is a ________. A) compound containing only boron and oxygen B) compound containing only boron and aluminum C) compound containing only boron and hydrogen D) compound containing only boron and carbon E) three-dimensional covalent network of boron atoms Answer: C Answer: C Answer: C 2) The kinetic energy of a 23.2-g object moving at a speed

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 628 Test

1) Which compound would produce a basic aqueous solution? A) KH B) H2S C) C2H6 D) CH3OH E) H2O Answer: A Answer: A Answer: A 2) Calculate the pOH of a solution at 25.0 oC that contains 1.94 x 10-10 M hydronium ions. A) 1.94 B) 4.29 C) 7.00 D) 14.0 E) 9.71 Answer: B Answer: B Answer: B 3) What metal is complexed in chlorophyll? A)

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 633 Quiz

1) The value of H for the following reaction is -3351 kJ: 2Al (s) + 3O2 (g) 2Al2O3 (s) The value of Hf for Al2O3 (s) is ________ kJ. A) -3351 B) -1676 C) -32.86 D) -16.43 E) +3351 Answer: B Answer: B Answer: B 2) The correct name for the BH4 - ion is ________. A) borate B) boride C) borohydride D) borite E)

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 634 Quiz 1

1) The density of a gold nugget is 19.3 g/cm3. If the volume of the gold nugget is 0.00369 L, the mass of the nugget is ________ g. A) 71.2 B) 0.191 C) 19.3 D) 5.23 E) none of the above Answer: A Answer: A Answer: A 2) What is the missing product from this reaction? P --> S +

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 636 Quiz

1) Atoms surrounded by eight valence electrons tend to lose electrons. Answer: FALSE Answer: FALSE Answer: FALSE 2) At constant temperature, reducing the volume of a gaseous equilibrium mixture causes the reaction to shift in the direction that increases the number of moles of gas in the system. Answer: FALSE Answer: FALSE Answer: FALSE 3) The energy produced

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 646 Midterm 1

1) The density of nitric oxide (NO) gas at 0.970 atm and 34.9 C is ________ g/L. A) 0.0384 B) 0.869 C) 1.15 D) 0.339 E) 10.2 Answer: C Answer: C Answer: C 2) The correct name for H2SO3 is ________. A) sulfuric acid B) sulfurous acid C) hydrosulfuric acid D) hydrosulfic acid E) sulfur hydroxide Answer: B Answer: B Answer: B 3) Diamagnetic solids ________. A) have atoms

Chemistry: The Central Science 13th Edition

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Cem 653 Quiz 3

1) Accuracy refers to ________. A) how close a measured number is to zero B) how close a measured number is to the calculated value C) how close a measured number is to other measured numbers D) how close a measured number is to the true value E) how close a measured number is to

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 668 Quiz

1) The dissolution of 1.0 mol of ________ to 1.0 L of water at 25 C would yield the most acidic solution. A) SO3 B) CO2 C) CO D) MgO E) CaO Answer: A Answer: A Answer: A 2) Calculate the pH of a solution that is 0.278 M in sodium formate (NaHCO2) and 0.222 M in

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 682 Midterm 2

1) The hybridization of the central carbon atom in an aldehyde is ________. A) sp B) sp3 C) sp2 D) d2sp3 E) sp4 Answer: C Answer: C Answer: C 2) At a temperature of ________ C, 0.444 mol of CO gas occupies 11.8 L at 839 torr. A) 379 B) 73.0 C) 14.0 D) 32.0 E) 83.5 Answer: E Answer: E Answer: E 3)

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 687

1) The Henry's law constant for helium gas in water at 30 oC is 3.70 x 10-4 M/atm. When the partial pressure of helium above a sample of water is 0.400 atm, the concentration of helium in the water is ________ M. A) 9.25 x 10-4 B) 1.08 x 103 C)

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 694 Test

1) Which one of the following exhibits dipole-dipole attraction between molecules? A) NH3 B) CF4 C) C10H22 D) O2 E) SF6 Answer: A Answer: A Answer: A 2) In the Haber process, ammonia is synthesized from nitrogen and hydrogen: N2 (g) + 3H2 (g) --> 2NH3 (g) G o at 298 K for this reaction

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 709

1) Predict the empirical formula of the ionic compound that forms from magnesium and oxygen. A) Mg2O B) MgO C) MgO2 D) Mg2O2 E) Mg3O2 Answer: B Answer: B Answer: B 2) What is the maximum number of double bonds that a hydrogen atom can form? A) 0 B) 1 C) 2 D) 3 E) 4 Answer: A Answer: A Answer: A 3) What are the

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 721

1) The mole fraction of urea (MW = 60.0 g/mol) in a solution prepared by dissolving 16 g of urea in 39 g of H2O is ________. A) 0.58 B) 0.37 C) 0.13 D) 0.11 E) 9.1 Answer: D Answer: D Answer: D 2) Which of the following is a polydentate ligand? A) ammonia B) oxalate ion C) chloride ion D) water E) hydroxide ion Answer:

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 722 Test 2

1) Of the following, the entropy of gaseous ________ is the largest at 25 oC and 1 atm. A) I2 B) F2 C) Cl2 D) Br2 E) O3 Answer: A Answer: A Answer: A 2) At elevated temperatures, methylisonitrile (CH3NC) isomerizes to acetonitrile (CH3CN): CH3NC (g) --> CH3CN (g) At the start of an experiment,

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 729 Test 1

1) In a typical multiple bond, the bond results from overlap of ________ orbitals and the bond(s) result from overlap of ________ orbitals. A) hybrid, atomic B) hybrid, hybrid C) atomic, hybrid D) hybrid, hybrid or atomic E) hybrid or atomic, hybrid or atomic Answer: A Answer: A Answer: A 2) A mole of yellow photons of wavelength 527

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 766

1) Round the number 3456.5 to two significant figures. A) 3400.0 B) 3400 C) 3000 D) 3500 E) 3000.0 Answer: D Answer: D Answer: D 2) Of the following, which is the strongest acid? A) HIO4 B) HIO3 C) HIO2 D) HIO E) The acid strength of all of the above is the same. Answer: A Answer: A Answer: A 3) Silver ions can be

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 768 Test

1) The rate constant for a second-order reaction is 0.13 M-1s-1. If the initial concentration of reactant is 0.26 mol/L, it takes ________ s for the concentration to decrease to 0.07 mol/L. A) 0.017 B) 1.4 C) 14 D) 80. E) 10. Answer: D Answer: D Answer: D 2) Calcium hydride (CaH2) reacts with water to form hydrogen gas: CaH2

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 791 Quiz 2

1) The electron-domain geometry of the AsF6 - ion is octahedral. The hybrid orbitals used by the As atom for bonding are ________ orbitals. A) sp2d2 B) sp3 C) sp3d D) sp3d2 E) sp2 Answer: D Answer: D Answer: D 2) What are the respective concentrations (M) of Cu+2 and Cl- afforded by dissolving 0.871

Chemistry: The Central Science 13th Edition

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Cem 809 Midterm 2

1) The photoelectric effect is ________. A) the total reflection of light by metals giving them their typical luster B) the production of current by silicon solar cells when exposed to sunlight C) the ejection of electrons by a metal when struck with light of sufficient energy D) the darkening of photographic film when

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 823 Quiz 2

1) A stock solution of HNO3 is prepared and found to contain 12.7 M of HNO3. If 25.0 mL of the stock solution is diluted to a final volume of 0.500 L, the concentration of the diluted solution is ________ M. A) 0.254 B) 1.57 C) 0.635 D) 635 E) 254 Answer: C Answer: C Answer: C 2) A 25.0

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 831 Midterm

1) What e x posure level to radiation is fatal to most humans? A) 100 rem B) 200 rem C) 600 rem D) 300 rem E) 1000 rem Answer: C Answer: C Answer: C 2) For a given reaction, H = -24.2 kJ/mol and S = -55.5 J/K-mol. The reaction will have G = 0 at ________K. Assume that

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 848 Quiz 2

1) Which of the following traits characterizes the alkali metals? A) very high melting point B) existence as diatomic molecules C) formation of dianions D) the lowest first ionization energies in a period E) the smallest atomic radius in a period Answer: D Answer: D Answer: D 2) Consider the reaction: NH3 (g) + HCl (g) --> NH4Cl (s) Given

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 854

1) Triphenylphosphine is often given the abbreviated formula PPh3. The correct name for Rh(PPh3)3Cl is ________. A) chlorotriphenylphosphinerhodium B) chlorotriphenylphosphinerhodium (I) C) tris(triphenylphosphine)chlororhodium (I) D) chlorotris(triphenylphosphine)rhodium (I) E) chlorotris(triphenylphosphine)rhodate (I) Answer: D Answer: D Answer: D 2) Calculate the percent ionization of formic acid (HCO2H) in a solution that is 0.322 M in formic acid and 0.178 M in

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 860 Quiz 2

1) The concentration of lead nitrate (Pb(NO3)2) in a 0.926 M solution is ________ molal. The density of the solution is 1.202 g/mL. A) 0.770 B) 2.13 C) 1.03 D) 0.819 E) 0.650 Answer: C Answer: C Answer: C 2) Which of the following cannot be a colloid? A) an emulsion B) an aerosol C) a homogeneous mixture D) a foam E) All of

Chemistry: The Central Science 13th Edition

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Cem 861 Midterm 1

1) The correct name of H2CO3 is ________. A) hydrogen carbide B) hydrogen carbonate ion C) carbonate ion D) carbonic acid E) carboxylic acid Answer: D Answer: D Answer: D 2) A mixture of Xe, Kr, and Ar has a total pressure of 6.69 atm. What is the mole fraction of Kr if the partial pressures of Xe and

Chemistry: The Central Science 13th Edition

Exam Prep

Cem 865 Quiz

1) The kinetic energy of a 23.2-g object moving at a speed of 81.9 km/hr is ________ kcal. A) 1.43 x 10-3 B) 6.00 C) 1900 D) 454 E) 0.0251 Answer: A Answer: A Answer: A 2) 1 kilogram = ________ milligrams A) 1 X 10-6 B) 1,000 C) 10,000 D) 1,000,000 E) none of the above Answer: D Answer: D Answer: D 3) On a

Chemistry: The Central Science 13th Edition

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CEM 869 Quiz 3

1) The correct name for HClO2 is ________. A) perchloric acid B) chloric acid C) hypochlorous acid D) hypychloric acid E) chlorous acid Answer: E Answer: E Answer: E 2) Which one of the following could be a straight-chain alkane? A) C9H20 B) C3H3 C) C4H6 D) C5H4 E) C3H6 Answer: A Answer: A Answer: A 3) Which one of the following gases

Chemistry: The Central Science 13th Edition

Exam Prep

CEM 875

1) Of the following, Hf is not zero for ________. A) O2 (g) B) C (graphite) C) N2 (g) D) F2 (s) E) Cl2 (g) Answer: D Answer: D Answer: D 2) C12H26 molecules are held together by ________. A) ion-ion interactions B) hydrogen bonding C) ion-dipole interactions D) dipole-dipole interactions E) dispersion forces Answer: E Answer: E Answer: E 3) Which one of the following is most

Chemistry: The Central Science 13th Edition

Exam Prep

Chapter 10 1 The Pressure Exerted By A Column Of Liquid Is Equal To The Product

1 Answer: B Diff: 1 Var: 1 Page Ref: Sec. 10.1 GO: G2 1 Answer: B Diff: 1 Var: 1 Page Ref: Sec. 10.1 GO: G2 1 Answer: B Diff: 1 Var: 1 Page Ref: Sec. 10.1 GO: G2 Chemistry: The Central Science, 13e (Brown et al.) Chapter 10 Gases

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 11 1 The Absolute Value The Heat Sublimation Equal

1 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 11.1 GO: G2 1 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 11.1 GO: G2 1 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 11.1 GO: G2 Chemistry: The Central Science, 13e (Brown et al.) Chapter 11 Liquids

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 11 2 Based On Molecular Mass And Dipole Moment Of The Five Compounds

20 Answer: E Diff: 3 Var: 1 Page Ref: Sec. 11.2 LO: 11.2 GO: G3 20 Answer: E Diff: 3 Var: 1 Page Ref: Sec. 11.2 LO: 11.2 GO: G3 20 Answer: E Diff: 3 Var: 1 Page Ref: Sec. 11.2 LO: 11.2 GO: G3 11.2 Bimodal Questions 1)

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 13 1 The Dissolution Of Water In Octane (C8H18) Is Prevented

1 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 13.1 LO: 13.1, 13.3 GO: G2 1 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 13.1 LO: 13.1, 13.3 GO: G2 1 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 13.1 LO: 13.1, 13.3 GO: G2 Chemistry:

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 13 2 Henrys Law Constant For Helium Gas Water

21 18) The mole fraction of urea (MW = 60.0 g/mol) in a solution prepared by dissolving 16 g of urea in 39 g of H2O is ________. A) 0.58 B) 0.37 C) 0.13 D) 0.11 E) 9.1 Answer: D Diff: 3 Var: 1 Page Ref: Sec. 13.4 LO: 13.4

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 13 3 What Is The Molarity Of Ammonium Chloride In The Solution

33 Answer: A Diff: 4 Var: 16 Page Ref: Sec. 13.4 LO: 13.4 GO: G4 33 Answer: A Diff: 4 Var: 16 Page Ref: Sec. 13.4 LO: 13.4 GO: G4 33 Answer: A Diff: 4 Var: 16 Page Ref: Sec. 13.4 LO: 13.4 GO: G4 25) A solution is

Chemistry: The Central Science (13th Edition) 13th Edition

Exam Prep

Chapter 14 1 A Burning Splint Will Burn More Vigorously In Pure Oxygen

1 Answer: E Diff: 1 Var: 1 Page Ref: Sec. 14.2 LO: 14.2 GO: G2 1 Answer: E Diff: 1 Var: 1 Page Ref: Sec. 14.2 LO: 14.2 GO: G2 1 Answer: E Diff: 1 Var: 1 Page Ref: Sec. 14.2 LO: 14.2 GO: G2 Chemistry: The Central Science, 13e

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 14 2 A Reaction Was Found To Be Second Order In Carbon Monoxide Concentration

21 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 14.3 LO: 14.3 GO: G2 21 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 14.3 LO: 14.3 GO: G2 21 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 14.3 LO: 14.3 GO: G2 17) At elevated temperatures, methylisonitrile

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 14 3 The Rate Constant For A Particular Zero-order Reaction

33 15) The rate constant for a particular zero-order reaction is 0.075 M s-1. If the initial concentration of reactant is 0.537 M it takes ________ s for the concentration to decrease to 0.100 M. A) 5.8 B) -5.8 C) -0.047 D) 7.2 E) 0.040 Answer: A Diff: 4 Var:

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 15 1 Which One Of The Following Will Change The Value Of An Equilibrium

1 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 15.2 LO: 15.2 GO: G2 1 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 15.2 LO: 15.2 GO: G2 1 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 15.2 LO: 15.2 GO: G2 Chemistry: The Central

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 15 2 What Is The Value Of KP At This Temperature

20 Answer: C Diff: 4 Var: 1 Page Ref: Sec. 15.6 LO: 15.6 GO: G4 20 Answer: C Diff: 4 Var: 1 Page Ref: Sec. 15.6 LO: 15.6 GO: G4 20 Answer: C Diff: 4 Var: 1 Page Ref: Sec. 15.6 LO: 15.6 GO: G4 12) The equilibrium

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 16 1 Which One Of The Following Statements Regarding K W Is False

1 Answer: E Diff: 1 Var: 1 Page Ref: Sec. 16.2 LO: 16.2 GO: G2 1 Answer: E Diff: 1 Var: 1 Page Ref: Sec. 16.2 LO: 16.2 GO: G2 1 Answer: E Diff: 1 Var: 1 Page Ref: Sec. 16.2 LO: 16.2 GO: G2 Chemistry: The Central Science,

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 16 2 HZ Is A Weak Acid. An Aqueous Solution Of HZ Is Prepared

21 Answer: D Diff: 4 Var: 1 Page Ref: Sec. 16.6 LO: 16.6, 16.7 GO: G4 21 Answer: D Diff: 4 Var: 1 Page Ref: Sec. 16.6 LO: 16.6, 16.7 GO: G4 21 Answer: D Diff: 4 Var: 1 Page Ref: Sec. 16.6 LO: 16.6, 16.7 GO: G4 18) HZ

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 16 3 What Is The POH Of An Aqueous Solution At 25.0 °C In Which

32 Answer: A Diff: 1 Var: 8 Page Ref: Sec. 16.5 LO: 16.5 GO: G2 32 Answer: A Diff: 1 Var: 8 Page Ref: Sec. 16.5 LO: 16.5 GO: G2 32 Answer: A Diff: 1 Var: 8 Page Ref: Sec. 16.5 LO: 16.5 GO: G2 12) What is the

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 17 1 Which One Of The Following Pairs Cannot Be Mixed Together

1 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 17.2 LO: 17.2 GO: G2 1 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 17.2 LO: 17.2 GO: G2 1 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 17.2 LO: 17.2 GO: G2 Chemistry: The Central Science,

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 17 2 The Acid Dissociation Constant Of Nitrous Acid

16 (KNO2). The acid dissociation constant of nitrous acid is 4.50 10-4. A) 3.093 B) 3.607 C) 14.26 D) 10.91 E) 4.589 Answer: A Diff: 4 Var: 10 Page Ref: Sec. 17.2 LO: 17.2 GO: G4 Answer: A Diff: 4 Var: 10 Page Ref: Sec. 17.2 LO: 17.2 GO: G4

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 18 1 Which Of The Following Is Arranged Correctly In Order Of Increasing

1 Answer: E Diff: 3 Var: 1 Page Ref: Sec. 18.1 LO: 18.1 GO: G2 1 Answer: E Diff: 3 Var: 1 Page Ref: Sec. 18.1 LO: 18.1 GO: G2 1 Answer: E Diff: 3 Var: 1 Page Ref: Sec. 18.1 LO: 18.1 GO: G2 Chemistry: The Central Science, 13e

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 18 2 The Sterilizing Action Of Chlorine In Water Is Due To What Substance

17 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 18.2 LO: 18.2 GO: G2 17 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 18.2 LO: 18.2 GO: G2 17 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 18.2 LO: 18.2 GO: G2 18) Acid rain typically

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 19 1 The First Law Of Thermodynamics Can Be Given As

1 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 19.1 LO: 19.1 GO: G2 1 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 19.1 LO: 19.1 GO: G2 1 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 19.1 LO: 19.1 GO: G2 Chemistry: The Central Science,

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 19 2 The Value Of ΔH° For The Decomposition Of Gaseous Sulfur

21 Answer: B Diff: 2 Var: 1 Page Ref: Sec. 19.5 LO: 19.5 GO: G3 21 Answer: B Diff: 2 Var: 1 Page Ref: Sec. 19.5 LO: 19.5 GO: G3 21 Answer: B Diff: 2 Var: 1 Page Ref: Sec. 19.5 LO: 19.5 GO: G3 24) The value of H

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 19 3 The Melting Of A Substance At Its Melting Point Is An Isothermal

32 Answer: A Diff: 2 Var: 4 Page Ref: Sec. 19.4 LO: 19.4 GO: G2 32 Answer: A Diff: 2 Var: 4 Page Ref: Sec. 19.4 LO: 19.4 GO: G2 32 Answer: A Diff: 2 Var: 4 Page Ref: Sec. 19.4 LO: 19.4 GO: G2 8) Of the following,

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 2 2 Barium Reacts With A Polyatomic Ion To Form A Compound

21 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 2.7 LO: 2.7 GO: G2 21 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 2.7 LO: 2.7 GO: G2 21 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 2.7 LO: 2.7 GO: G2 Copyright 2015 Pearson

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 2 3 What Is The Correct Formula For Ammonium Sulfide

41 Answer: E Diff: 2 Var: 1 Page Ref: Sec. 2.8 LO: 2.8 GO: G2 41 Answer: E Diff: 2 Var: 1 Page Ref: Sec. 2.8 LO: 2.8 GO: G2 41 Answer: E Diff: 2 Var: 1 Page Ref: Sec. 2.8 LO: 2.8 GO: G2 Copyright 2015 Pearson

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 2 4 How Many Neutrons Are There In One Atom Of 184W

54 Answer: D Diff: 3 Var: 5 Page Ref: Sec. 2.3 LO: 2.3 GO: G2 54 Answer: D Diff: 3 Var: 5 Page Ref: Sec. 2.3 LO: 2.3 GO: G2 54 Answer: D Diff: 3 Var: 5 Page Ref: Sec. 2.3 LO: 2.3 GO: G2 Copyright 2015 Pearson

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 20 1 Which Element Is Reduced In The Reaction Below

1 Answer: B Diff: 1 Var: 1 Page Ref: Sec. 20.1 LO: 20.1 GO: G2 1 Answer: B Diff: 1 Var: 1 Page Ref: Sec. 20.1 LO: 20.1 GO: G2 1 Answer: B Diff: 1 Var: 1 Page Ref: Sec. 20.1 LO: 20.1 GO: G2 Chemistry: The Central Science, 13e

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 20 2 What Is The Oxidation Number Of Nitrogen In The NH 2OH Molecule

18 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 20.5 LO: 20.5 GO: G2 18 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 20.5 LO: 20.5 GO: G2 18 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 20.5 LO: 20.5 GO: G2 29) The standard cell potential

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 21 1 All Atoms Of A Given Element Have The Same

1 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 21.1 LO: 21.1 GO: G2 1 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 21.1 LO: 21.1 GO: G2 1 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 21.1 LO: 21.1 GO: G2 Chemistry: The Central Science, 13e

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 21 2 The Missing Product From This Reaction Is

21 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 21.1 LO: 21.1 GO: G2 21 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 21.1 LO: 21.1 GO: G2 21 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 21.1 LO: 21.1 GO: G2 A) B B) N C)

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 21 3 When An Atom Of An Element Undergoes Beta Decay

36 Answer: A Diff: 2 Var: 4 Page Ref: Sec. 21.1 LO: 21.1 GO: G2 36 Answer: A Diff: 2 Var: 4 Page Ref: Sec. 21.1 LO: 21.1 GO: G2 36 Answer: A Diff: 2 Var: 4 Page Ref: Sec. 21.1 LO: 21.1 GO: G2 6) When an atom

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 22 1 How Many Oxygen Atoms Are Bonded To Each Silicon Atom

1 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 22.2 LO: 22.2 - 22.11 GO: G2 1 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 22.2 LO: 22.2 - 22.11 GO: G2 1 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 22.2 LO: 22.2 - 22.11 GO:

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 22 2 The Number Of Electrons In The Valence Shell Of XE In

21 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 22.3 LO: 22.2 - 22.11 GO: G2 21 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 22.3 LO: 22.2 - 22.11 GO: G2 21 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 22.3 LO: 22.2 - 22.11 GO:

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 22 3 Which Compound Would Produce An Acidic Aqueous Solution

33 Answer: A Diff: 1 Var: 6 Page Ref: Sec. 22.2 LO: 20.2 GO: G2 33 Answer: A Diff: 1 Var: 6 Page Ref: Sec. 22.2 LO: 20.2 GO: G2 33 Answer: A Diff: 1 Var: 6 Page Ref: Sec. 22.2 LO: 20.2 GO: G2 6) Which compound would

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 23 1 Chalcocite, Chalcopyrite, And Malachite Are Sources Of Which

1 Answer: A Diff: 2 Var: 1 Page Ref: Sec. 23.1 LO: 23.1 GO: G2 1 Answer: A Diff: 2 Var: 1 Page Ref: Sec. 23.1 LO: 23.1 GO: G2 1 Answer: A Diff: 2 Var: 1 Page Ref: Sec. 23.1 LO: 23.1 GO: G2 Chemistry: The Central Science,

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 23 2 What Is The Charge Of The Central Metal Ion

20 Answer: D Diff: 1 Var: 1 Page Ref: Sec. 23.2 LO: 23.2 GO: G2 20 Answer: D Diff: 1 Var: 1 Page Ref: Sec. 23.2 LO: 23.2 GO: G2 20 Answer: D Diff: 1 Var: 1 Page Ref: Sec. 23.2 LO: 23.2 GO: G2 A) Ca2+ B) Fe3+ C)

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 24 1 Which Substance Would Be The Most Soluble In Gasoline

1 Answer: D Diff: 1 Var: 1 Page Ref: Sec. 24.2 LO: 24.2 GO: G2 1 Answer: D Diff: 1 Var: 1 Page Ref: Sec. 24.2 LO: 24.2 GO: G2 1 Answer: D Diff: 1 Var: 1 Page Ref: Sec. 24.2 LO: 24.2 GO: G2 Chemistry: The Central Science,

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 24 2 The Octane Number Of Straight-run Gasoline Is About

21 Answer: B Diff: 1 Var: 1 Page Ref: Sec. 24.3 LO: 24.3 GO: G2 21 Answer: B Diff: 1 Var: 1 Page Ref: Sec. 24.3 LO: 24.3 GO: G2 21 Answer: B Diff: 1 Var: 1 Page Ref: Sec. 24.3 LO: 24.3 GO: G2 17) The octane number of

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 4 2 When Aqueous Solutions Of AgNO3 And KI Are Mixed

21 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 4.2 LO: 4.2-4 GO: G2 21 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 4.2 LO: 4.2-4 GO: G2 21 Answer: C Diff: 2 Var: 1 Page Ref: Sec. 4.2 LO: 4.2-4 GO: G2 12) When aqueous solutions

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 5 2 The Value Of ΔH° For The Following Reaction

21 Answer: B Diff: 3 Var: 1 Page Ref: Sec. 5.4 LO: 5.4 GO: G4 21 Answer: B Diff: 3 Var: 1 Page Ref: Sec. 5.4 LO: 5.4 GO: G4 21 Answer: B Diff: 3 Var: 1 Page Ref: Sec. 5.4 LO: 5.4 GO: G4 Copyright 2015 Pearson Education,

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 5 3 During A Reaction In Which The Internal Volume Expands

36 Answer: B Diff: 3 Var: 1 Page Ref: Sec. 5.8 GO: G7 36 Answer: B Diff: 3 Var: 1 Page Ref: Sec. 5.8 GO: G7 36 Answer: B Diff: 3 Var: 1 Page Ref: Sec. 5.8 GO: G7 Copyright 2015 Pearson Education, Inc. Copyright 2015 Pearson Education, Inc.

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 7 1 In Which Set Of Elements Would All Members Be Expected To Have,

1 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 7.2 LO: 7.2 GO: G2 1 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 7.2 LO: 7.2 GO: G2 1 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 7.2 LO: 7.2 GO: G2 Copyright 2015 Pearson

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 7 2 Hydrogen Is Unique Among The Elements Because

21 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 7.8 LO: 7.8 GO: G2 21 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 7.8 LO: 7.8 GO: G2 21 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 7.8 LO: 7.8 GO: G2 Copyright 2015 Pearson Education,

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 7 3 Bromine Is Much More Apt To Exist As An Anion Than Is Potassium

33 Answer: A Diff: 1 Var: 50+ Page Ref: Sec. 7.3 LO: 7.3 GO: G2 33 Answer: A Diff: 1 Var: 50+ Page Ref: Sec. 7.3 LO: 7.3 GO: G2 33 Answer: A Diff: 1 Var: 50+ Page Ref: Sec. 7.3 LO: 7.3 GO: G2 Copyright 2015 Pearson

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 8 1 Which Of The Following Has Eight Valence Electrons

1 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 8.2 LO: 8.2 GO: G2 1 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 8.2 LO: 8.2 GO: G2 1 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 8.2 LO: 8.2 GO: G2 Chemistry: The Central Science, 13e

Chemistry: The Central Science (13th Edition) 13th Edition

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Chapter 9 2 The Bond Order Of Any Molecule Containing Equal Numbers

21 67) The bond order of any molecule containing equal numbers of bonding and antibonding electrons is ________. A) 0 B) 1 C) 2 D) 3 E) 1/2 Answer: A Diff: 3 Var: 1 Page Ref: Sec. 9.7 LO: 9.7 GO: G2 Answer: A Diff: 3 Var: 1 Page

Chemistry: The Central Science (13th Edition) 13th Edition

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CHEM 115 Test 2

1) A compound decomposes by a first-order process. If 13% of the compound decomposes in 60 minutes, the half-life of the compound is ________. A) 299 B) 20 C) 12 D) -18 E) -5 Answer: A Answer: A Answer: A 2) Which of the following expressions is the correct equilibrium-constant expression for the reaction below? CO2 (s) + H2O (l) H+

Chemistry: The Central Science 13th Edition

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CHEM 120

1) Which of the following ions will act as a weak base in water? A) OH- B) Cl- C) NO3 - D) ClO- E) None of the above will act as a weak base in water. Answer: D Answer: D Answer: D 2) Tetraboric acid, H2B4O7, is prepared by heating boric acid, H3BO3 (a condensation reaction

Chemistry: The Central Science 13th Edition

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Chem 132

1) Which one of the following is most soluble in hexane (C6H14)? A) CH3OH B) CH3CH2CH2OH C) CH3CH2OH D) CH3CH2CH2CH2OH E) CH3CH2CH2CH2CH2OH Answer: E Answer: E Answer: E 2) The Lewis structure of the CO3 2- ion is ________. A) B) C) D) E) Answer: A Answer: A Answer: A 3) The value of H for the reaction below is -72

Chemistry: The Central Science 13th Edition

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Chem 133 Quiz 3

1) To convert from one resonance structure to another, ________. A) only atoms can be moved B) electrons and atoms can both be moved C) only electrons can be moved D) neither electrons nor atoms can be moved E) electrons must be added Answer: C Answer: C Answer: C 2) Oxygen is a ________ and nitrogen is a ________. A)

Chemistry: The Central Science 13th Edition

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CHEM 144 Midterm

1) Which of the following is soluble in water at 25 C? A) AgNO3 B) Hg2Cl2 C) PbCl2 D) Ag2S E) AgCl Answer: A Answer: A Answer: A 2) The value of H for the reaction below is +128.1 kJ: CH3OH (l) CO (g) + 2H2 (g) How many kJ of heat are consumed when 15.5 g

Chemistry: The Central Science 13th Edition

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CHEM 167 Quiz

1) The de Broglie wavelength of a 84.32 gram bullet traveling at the speed of 308.6 m/s is ________ m. A) 2.546 X 10-35 B) 2.546 X 10-36 C) 2.546 X 10-37 D) 2.546 X 10-38 E) 1.724 X 10-32 Answer: A Answer: A Answer: A 2) Using the table of bond dissociation energies, the

Chemistry: The Central Science 13th Edition

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Chem 207 Quiz 1

1) The principal component of smog is sulfur dioxide. Answer: FALSE Answer: FALSE Answer: FALSE 2) The concentration of reactants or products at any time during the reaction can be calculated from the integrated rate law. Answer: TRUE Answer: TRUE Answer: TRUE 3) Emulsifying agents typically have a hydrophobic end and a hydrophilic end. Answer: TRUE Answer: TRUE Answer: TRUE 4) The

Chemistry: The Central Science 13th Edition

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CHEM 222 Homework

1) Calculate the molarity of hydro xide ion in an aqueous solution that has a pOH of 3.00. A) 1.0 x 10-3 B) 11.00 C) 1.0 x 10-11 D) 3.0 x 10-14 E) 1.1 x 10-13 Answer: A Answer: A Answer: A 2) A substance that expands to fill its container yet has a density

Chemistry: The Central Science 13th Edition

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CHEM 254 Quiz

1) The correct name for SO is ________. A) sulfur oxide B) sulfur monoxide C) sulfoxide D) sulfate E) sulfite Answer: B Answer: B Answer: B 2) Which isotope has 45 neutrons? A) Kr B) Br C) Se D) Cl E) Rh Answer: B Answer: B Answer: B 3) Which equation correctly represents what happens when N dissolves in water? A) NO2 (g) + H2O (l) --> 2H+ (aq)

Chemistry: The Central Science 13th Edition

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CHEM 268 1 The Angular Momentum

1) The angular momentum quantum number (l) value of 2 indicates the ________ subshell. A) d B) f C) s D) p E) +1/2 Answer: A Answer: A Answer: A 2) Precision refers to ________. A) how close a measured number is to other measured numbers B) how close a measured number is to the true value C) how close a measured

Chemistry: The Central Science 13th Edition

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Chem 274 Quiz 1

1) The ________ ion has eight valence electrons. A) Sc3+ B) Ti3+ C) V3+ D) Cr3+ E) Mn3+ Answer: A Answer: A Answer: A 2) In a hydrogen atom, an electron in a ________ orbital can absorb a photon, but cannot emit a photon. A) 3s B) 2s C) 3p D) 1s E) 3f Answer: D Answer: D Answer: D 3) The Mond

Chemistry: The Central Science 13th Edition

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CHEM 277 Test 1

1) In terms of binding energy per nucleon, what element divides fission and fusion processes? A) H B) He C) C D) Fe E) U Answer: D Answer: D Answer: D 2) Which mineral contains titanium? A) pyrolusite B) chalcopyrite C) galena D) rutile E) sphalerite Answer: D Answer: D Answer: D 3) Which of the following is a statement of Hess's law? A) If a reaction is carried

Chemistry: The Central Science 13th Edition

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CHEM 277 Test 2

1) How many pairs of unpaired electrons are there in one molecule of dinitrogen monoxide? A) 4 B) 3 C) 5 D) 2 E) 1 Answer: A 22.4 Short Answer Answer: A 22.4 Short Answer Answer: A 22.4 Short Answer 2) The following reaction is second order in [A] and the rate constant is 0.039 M-1s-1: A --> B The concentration

Chemistry: The Central Science 13th Edition

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Chem 281 Homework

1) Based on the equations below, which metal is the most active? Pb(NO3)2 (aq) + Ni (s) Ni(NO3)2 (aq) + Pb (s) Pb(NO3)2 (aq) + Ag (s) No reaction Cu(NO3)2 (aq) + Ni (s) Ni(NO3)2 (aq) + Cu (s) A) Ni B) Ag C) Cu D) Pb E) N Answer: A Answer: A Answer: A 2) The

Chemistry: The Central Science 13th Edition

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CHEM 285 Quiz 3

1) Thermodynamic Quantities for Selected Substances at 298.15 K (25 oC) The value of S o for the decomposition of gaseous sulfur trioxide to solid elemental sulfur and gaseous oxygen, 2SO3 (g) --> 2S (s, rhombic) + 3O2 (g) is ________ J/K mol. A) +19.3 B) -19.3 C) +493.1 D) +166.4 E) -493.1 Answer: D Answer: D Answer: D 2) When

Chemistry: The Central Science 13th Edition

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CHEM 289

1) The central atom in ________ does not violate the octet rule. A) SF4 B) KrF2 C) CF4 D) XeF4 E) ICl4 - Answer: C Answer: C Answer: C 2) Which atom can accommodate an octet of electrons, but doesn't necessarily have to accommodate an octet? A) N B) C C) H D) O E) B Answer: E Answer: E Answer: E 3) What

Chemistry: The Central Science 13th Edition

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Chem 295

1) There is/are ________ bond(s) in the molecule below. A) 1 B) 2 C) 12 D) 13 E) 18 Answer: C Answer: C Answer: C 2) The halogens, alkali metals, and alkaline earth metals have ________ valence electrons, respectively. A) 7, 4, and 6 B) 1, 5, and 7 C) 8, 2, and 3 D) 7, 1, and 2 E) 2, 7, and 4 Answer:

Chemistry: The Central Science 13th Edition

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CHEM 304 Quiz

1) At elevated temperatures, nitrogen dioxide decomposes to nitrogen oxide and oxygen: NO2 (g) --> NO (g) + O2 (g) The reaction is second order in NO2 with a rate constant of 0.543 M-1s-1at 300 oC. If the initial [NO2] is 0.260 M, it will take ________ s for the concentration

Chemistry: The Central Science 13th Edition

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Chem 313 Final

1) Which one of the following is false concerning pure hydrazine? A) It is an oily, colorless liquid. B) It can be made by reaction of hypochlorite and ammonia. C) It is used as a rocket fuel. D) Hydrazine is quite poisonous. E) It is a clear, red liquid that is highly viscous. Answer: E Answer: E Answer:

Chemistry: The Central Science 13th Edition

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Chem 313 Homework

1) For a first-order reaction, a plot of ________ versus ________ is linear. A) ln [A]t, B) ln [A]t, t C) , t D) [A]t, t E) t, Answer: B104 Answer: B104 Answer: B104 2) What mass (g) of AgBr is formed when 57.8 mL of 0.423 M AgNO3 is treated with an excess of aqueous hydrobromic

Chemistry: The Central Science 13th Edition

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CHEM 314 Midterm

1) Kp = 0.0198 at 721 K for the reaction 2HI (g) H2 (g) + I2 (g) In a particular experiment, the partial pressures of H2 and I2 at equilibrium are 0.678 and 0.788 atm, respectively. The partial pressure of HI is ________ atm. A) 7.87 B) 27.0 C) 5.19 D) 0.103 E) 0.0106 Answer: C Answer: C Answer: C 2)

Chemistry: The Central Science 13th Edition

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Chem 315 Test 2

1) The valence shell of the element X contains 2 electrons in a 5s subshell. Below that shell, element X has a partially filled 4d subshell. What type of element is X? A) main group element B) chalcogen C) halogen D) transition metal E) alkali metal Answer: D Answer: D Answer: D 2) An antibonding orbital contains a maximum

Chemistry: The Central Science 13th Edition

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Chem 316

1) How many hydrogen atoms must bond to silicon to give it an octet of valence electrons? A) 1 B) 2 C) 3 D) 4 E) 5 Answer: D Answer: D Answer: D 2) The Keq for the equilibrium below is 7.52 x 10-2 at 480.0 oC. 2Cl2 (g) + 2H2O (g) 4HCl (g) + O2 (g) What is the

Chemistry: The Central Science 13th Edition

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CHEM 323

1) According to MO theory, overlap of two s atomic orbitals produces ________. A) one bonding molecular orbital and one hybrid orbital B) two bonding molecular orbitals C) two bonding molecular orbitals and two antibonding molecular orbitals D) two bonding molecular orbitals and one antibonding molecular orbital E) one bonding molecular orbital and one antibonding

Chemistry: The Central Science 13th Edition

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Chem 331 The N-n Bond In Hnnh Consists Of

1) What volume (mL) of a concentrated solution of magnesium chloride (9.00 M) must be diluted to 350. mL to make a 2.75 M solution of magnesium chloride? A) 2.75 B) 50.0 C) 45.0 D) 107 E) 350 Answer: D Answer: D Answer: D 2) Consider the reaction: FeO (s) + Fe (s) + O2(g) --> Fe2O3 (s) Given the following

Chemistry: The Central Science 13th Edition

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CHEM 333 Test 1

1) Which of the following are strong electrolytes? HCl HC2H3O2 NH3 KCl A) HCl, KCl B) HCl, NH3, KCl C) HCl, HC2H3O2, NH3, KCl D) HCl, HC2H3O2, KCl E) HC2H3O2, KCl Answer: A Answer: A Answer: A 2) [Ar]4s23d104p3 is the electron configuration of a(n) ________ atom. A) As B) V C) P D) Sb E) Sn Answer: A Answer: A Answer: A 3) Which one of the following is

Chemistry: The Central Science 13th Edition

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CHEM 360 Test 2

1) Oxides of the active metals combine with acid to form ________. A) hydrogen gas B) metal hydrides C) water and a salt D) oxygen gas E) metal hydroxides Answer: C Answer: C Answer: C 2) The missing product from this reaction is ________. Se + e --> _____ A) Se B) As C) Se D) Br E) none of the above Answer: B Answer: B Answer: B 3)

Chemistry: The Central Science 13th Edition

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CHEM 362 Midterm 1

1) Solids have a ________ shape and are not appreciably ________. A) definite, compressible B) definite, incompressible C) indefinite, compressible D) indefinite, incompressible E) sharp, convertible Answer: A Answer: A Answer: A 2) A reaction that is not spontaneous at low temperature can become spontaneous at high temperature if H is ________ and S is ________. A) +, + B) -,

Chemistry: The Central Science 13th Edition

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CHEM 366

1) An ideal gas differs from a real gas in that the molecules of an ideal gas ________. A) have no attraction for one another B) have appreciable molecular volumes C) have a molecular weight of zero D) have no kinetic energy E) have an average molecular mass Answer: A Answer: A Answer: A 2) A certain liquid has

Chemistry: The Central Science 13th Edition

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Chem 374

1) The specific heat of bromine liquid is 0.226 J/g-K. The molar heat capacity (in J/mol-K) of bromine liquid is ________. A) 707 J/mol-K B) 36.1 J/mol-K C) 18.1 J/mol-K D) 9.05 J/mol-K E) 0.226 J/mol-K Answer: B Answer: B Answer: B 2) The average rate of appearance of B between 20 s and 30 s is ________ mol/s. A)

Chemistry: The Central Science 13th Edition

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Chem 377 Quiz 3

1) The oxidation state of sulfur in the SO3 molecule is ________. A) +6 B) +2 C) -2 D) +4 E) 0 Answer: A Answer: A Answer: A 2) Dinitrogentetraoxide partially decomposes according to the following equilibrium: N2O4 (g) 2 NO2 (g) A 1.00-L flask is charged with ofN2O4. At equilibrium at 373 K, 0.0055 mol of N2O4 remains. Keq

Chemistry: The Central Science 13th Edition

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Chem 383 Test

1) Given the data in the table below, Hrxn for the reaction 3NO2 (g) + H2O (l) 2HNO3 (aq) + NO (g) is ________ kJ. A) 64 B) 140 C) -140 D) -508 E) -64 Answer: C Answer: C Answer: C 2) A 25.0 mL sample of 0.150 M hydrazoic acid is titrated with a 0.150 M NaOH solution. What

Chemistry: The Central Science 13th Edition

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Chem 392

1) A 5-ounce cup of raspberry yogurt contains 6.0 g of protein, 2.0 g of fat, and 16.3 g of carbohydrate. The fuel values for protein, fat, and carbohydrate are 17, 38, and 17 kJ/g, respectively. The fuel value of this cup of yogurt is ________ kJ. A) 460 B) 520 C) 280 D)

Chemistry: The Central Science 13th Edition

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Chem 400 Quiz 1

1) Oxalic acid is a diprotic acid. Calculate the percent of oxalic acid (H2C2O4) in a solid given that a 0.7984-g sample of that solid required 37.98 mL of 0.2283 M NaOH for neutralization. A) 48.89 B) 97.78 C) 28.59 D) 1.086 E) 22.83 Answer: A Answer: A Answer: A 2) Which group 3A element is a metalloid? A) B B)

Chemistry: The Central Science 13th Edition

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Chem 401 Midterm 1

1) Which pair of elements below should be the most similar in chemical properties? A) C and O B) B and As C) I and Br D) K and Kr E) Cs and He Answer: C Answer: C Answer: C 2) Of the following elements, ________ has the most negative electron affinity. A) P B) Al C) Si D) Cl E) B Answer: D Answer: D Answer:

Chemistry: The Central Science 13th Edition

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CHEM 405

1) CO (5.00 g) and CO2 (5.00 g) were placed in a 750.0 mL container at 50.0 C. The total pressure in the container was ________ atm. A) 10.3 B) 4.02 C) 6.31 D) 0.292 E) 1.60 Answer: A Answer: A Answer: A 2) What are the spectator ions in the reaction between KCl (aq) and AgNO3 (aq)? A) K+

Chemistry: The Central Science 13th Edition

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CHEM 410 Quiz 3

1) Coordination sphere isomers ________. A) have the same molecular formula and coordination number B) have the same molecular formula but different coordination numbers C) have different molecular formulas but the same coordination number D) have different molecular formulas and different coordination numbers E) are the same as resonance structures Answer: A Answer: A Answer: A 2) The elementary

Chemistry: The Central Science 13th Edition

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CHEM 426 Midterm

1) What type of reaction is known as a thermonuclear reaction? A) fission B) fusion C) transmutation D) beta emission E) neutron emission Answer: B Answer: B Answer: B 2) In a px orbital, the subscript x denotes the ________. A) energy of the electron B) spin of the electrons C) probability of the shell D) size of the orbital E) axis along which

Chemistry: The Central Science 13th Edition

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Chem 433 Midterm 1

1) What is the largest number of protons that can e x ist in a nucleus and still be stable? A) 206 B) 50 C) 92 D) 83 E) 84 Answer: D Answer: D Answer: D 2) Electromagnetic radiation with a wavelength of 425 nm appears as violet light to the human eye. The energy of one photon of

Chemistry: The Central Science 13th Edition

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CHEM 446 Quiz 3

1) Which one of the following is the highest temperature? A) 38 C B) 96 F C) 302 K D) none of the above E) the freezing point of water Answer: A Answer: A Answer: A 2) The half-life of cobalt-60 is 5.20 yr. How many milligrams of a 2.000-mg sample remain after 9.50 years? A) 0.565 B) 7.03 x 10-22

Chemistry: The Central Science 13th Edition

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Chem 449

1) The entropy of the universe is ________. A) constant B) continually decreasing C) continually increasing D) zero E) the same as the energy, E Answer: C Answer: C Answer: C 2) The energy of a photon of light is ________ proportional to its frequency and ________ proportional to its wavelength. A) directly, directly B) inversely, inversely C) inversely, directly D) directly, inversely E)

Chemistry: The Central Science 13th Edition

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CHEM 476 Homework

1) The rate limiting step in a reaction is the slowest step in the reaction sequence. Answer: TRUE Answer: TRUE Answer: TRUE 2) Ca(OH)2 is a strong base. Answer: TRUE Answer: TRUE Answer: TRUE 3) To separate racemic mixtures, the isomers must be in a chiral environment. Answer: TRUE Answer: TRUE Answer: TRUE 4) Boron trifluoride has three bonding domains, and its

Chemistry: The Central Science 13th Edition

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CHEM 482 Midterm

1) ________-rays consist of fast-moving electrons. A) Alpha B) Beta C) Gamma D) X E) none of the above Answer: B Answer: B Answer: B 2) What radioactive element is used to diagnose medical conditions of the heart and arteries? A) cobalt-60 B) thallium-201 C) radium-226 D) radon-222 E) thorium-234 Answer: B Answer: B Answer: B 3) The principal reason for the extremely low solubility of NaCl in

Chemistry: The Central Science 13th Edition

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CHEM 491 Quiz 3

1) The product of the nuclear reaction in which 40Ar is subjected to neutron capture followed by alpha emission is ________. A) 37S B) 41Ar C) 36S D) 45Ca E) 35Ar Answer: A Answer: A Answer: A 2) A neutralization reaction between an acid and a metal hydroxide produces ________. A) water and a salt B)

Chemistry: The Central Science 13th Edition

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Chem 495 Midterm

1) Oxidation is the ________ and reduction is the ________. A) gain of oxygen, loss of electrons B) loss of oxygen, gain of electrons C) loss of electrons, gain of electrons D) gain of oxygen, loss of mass E) gain of electrons, loss of electrons Answer: C Answer: C Answer: C 2) Zinc reacts with aqueous sulfuric acid to

Chemistry: The Central Science 13th Edition

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CHEM 529

1) The vapor pressure of pure water at 25 oC is 23.8 torr. What is the vapor pressure (torr) of water above a solution prepared by dissolving 18.0 g of glucose (a nonelectrolyte, MW = 180.0 g/mol) in 95.0 g of water? A) 24.3 B) 23.4 C) 0.451 D) 0.443 E) 23.8 Answer: B Answer: B Answer: B 2)

Chemistry: The Central Science 13th Edition

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Chem 544 Final

1) The missing product from this reaction is ________. B + _____ --> N + n A) He B) e C) n D) e E) Answer: A Answer: A Answer: A 2) Of the reactions below, only ________ is not spontaneous. A) Mg (s) + 2HCl (aq) MgCl2 (aq) + H2(g) B) 2Ag (s) + 2HNO3 (aq) 2AgNO3 (aq) +

Chemistry: The Central Science 13th Edition

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Chem 551 Quiz

1) The instability of xenon fluorides is due to its negative enthalpy of formation. Answer: FALSE Answer: FALSE Answer: FALSE 2) The quantity of product that is calculated to form when all of the limiting reagent reacts is called the actual yield. Answer: FALSE Answer: FALSE Answer: FALSE 3) Ozone depletion from chlorofluorocarbons is chiefly due to the

Chemistry: The Central Science 13th Edition

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Chem 566 Test

1) Consider the following reaction: A --> 2C The average rate of appearance of C is given by [C]/t. Comparing the rate of appearance of C and the rate of disappearance of A, we get [C]/t = ________ x (-[A]/t). A) +2 B) -1 C) +1 D) +1/2 E) -1/2 Answer: A A flask is charged with 0.124

Chemistry: The Central Science 13th Edition

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CHEM 566 Test 1

1) When aqueous solutions of AgNO3 and KI are mixed, AgI precipitates. The balanced net ionic equation is ________. A) Ag+ (aq) + I- (aq) AgI (s) B) Ag+ (aq) + NO3 - (aq) AgNO3 (s) C) Ag+ (aq) + NO3 - (aq) AgNO3 (aq) D) AgNO3 (aq) + KI (aq) AgI (s)

Chemistry: The Central Science 13th Edition

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Chem 587 Test 2

1) The name of PCl3 is ________. A) potassium chloride B) phosphorus trichloride C) phosphorous(III) chloride D) monophosphorous trichloride E) trichloro potassium Answer: B Answer: B Answer: B 2) What is the maximum amount in grams of SO3 that can be produced by the reaction of 1.0 g of S with of O2 via the equation below? S (s)

Chemistry: The Central Science 13th Edition

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Chem 590 Quiz 2

1) Which compound would produce an acidic aqueous solution? A) HF B) MgH2 C) C2H2 D) KH E) H2 Answer: A Answer: A Answer: A 2) Ka for HF is 7.0 x 10-4. Kb for the fluoride ion is ________. A) 2.0 x 10-8 B) 1.4 x 10-11 C) 7.0 x 10-18 D) 7.0 x 10-4 E)

Chemistry: The Central Science 13th Edition

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CHEM 590 Test

1) ________ is isoelectronic with argon, and ________ is isoelectronic with neon. A) P3-, N3- B) P2-, N2- C) P3+, N3+ D) N3-, P3- E) P, N Answer: A Answer: A Answer: A 2) The frequency of a photon that has an energy of 3.7 X 10-18 J is ________ s-1. A) 5.6 X 1015 B)

Chemistry: The Central Science 13th Edition

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Chem 607 Quiz 1

1) In metallic hydrides, the oxidation number of hydrogen is considered to be ________. A) -2 B) -1 C) 0 D) +1 E) +2 Answer: B Answer: B Answer: B 2) A gas at a pressure of 10.0 Pa exerts a force of ________ N on an area of 5.5 m2. A) 55 B) 0.55 C) 5.5 D) 1.8 E) 18 Answer: A Answer: A Answer: A 3)

Chemistry: The Central Science 13th Edition

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Chem 623 Test 1

1) Classify the following compounds as weak bases (W) or strong bases (S): ammonia fluoride ion sodium hydro xide A) W W S B) S S S C) S W W D) W S S E) W S W Answer: A Answer: A Answer: A 2) The structure of 2,3-dimethylheptane is ________. A) B) C) D) E) Answer: D Answer: D Answer: D 3) Based on molecular orbital theory, the bond

Chemistry: The Central Science 13th Edition

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Chem 624 Test 2

1) The density of a 167.4 g sample of magnesium having a volume of 96.32 mL is ________ g/cm3. A) 0.5754 B) 7128 C) 3.625 D) 2.663 E) 1.738 Answer: E Answer: E Answer: E 2) Which solution will be the most basic? A) 0.10 M Ba(OH)2 B) 0.10 M KOH C) 0.10 M H2O D) 0.10 M CH3OH E) All solutions

Chemistry: The Central Science 13th Edition

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Chem 638

1) Which one of the following is not an intensive property? A) density B) temperature C) melting point D) mass E) boiling point Answer: D Answer: D Answer: D 2) The carbon-carbon bond in ethylene, , results from the overlap of ________. A) sp hybrid orbitals B) sp3 hybrid orbitals C) sp2 hybrid orbitals D) s atomic orbitals E) p atomic orbitals Answer: C Answer: C Answer:

Chemistry: The Central Science 13th Edition

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Chem 659 Test 2

1) How many equivalent resonance structures can be drawn for the molecule of SO3 without having to violate the octet rule on the sulfur atom? A) 5 B) 2 C) 1 D) 4 E) 3 Answer: E Answer: E Answer: E 2) A pressure of 0.500 atm is the same as a pressure of ________ of mm Hg. A) 193 B)

Chemistry: The Central Science 13th Edition

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Chem 660 Test

1) Element X reacts with chlorine to form a compound with the formula XCl2. The oxide of element X is basic. Element X is ________. A) Rb B) Ca C) Al D) P E) H Answer: B Answer: B Answer: B 2) Which of the following statements is true? A) Q does not change with temperature. B) Keq does not change

Chemistry: The Central Science 13th Edition

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CHEM 683 Quiz 2

1) The pH of a solution that contains 0.800 M acetic acid (Ka = 1.76 x 10-5) and 0.172 M sodium acetate is ________. A) 4.087 B) 5.422 C) 8.578 D) 8.370 E) 9.913 Answer: A Answer: A Answer: A 2) Which one of the following statements is true? A) Enthalpy is an intensive property. B) The enthalpy change for a

Chemistry: The Central Science 13th Edition

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Chem 698

1) Carbon-11 decays by ________. A) alpha emission B) beta emission C) positron emission D) photon emission E) neutron capture Answer: C Answer: C Answer: C 2) Standard temperature and pressure (STP), in the context of gases, refers to ________. A) 298.15 K and 1 atm B) 273.15 K and 1 atm C) 298.15 K and 1 torr D) 273.15 K and 1

Chemistry: The Central Science 13th Edition

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CHEM 701 Quiz 3

1) The bond length in an HI molecule is and the measured dipole moment is 0.44 D. What is the magnitude (in units of e) of the negative charge on I in HI? (1 debye = 3.34 x 10-30 coulomb-meters; e = 1.6 x 10-19 coulombs) A) 1.6 x 10-19 B) 0.057 C) 9.1 D)

Chemistry: The Central Science 13th Edition

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CHEM 705 Test

1) Glass is ________ whereas quartz is ________. A) hard, soft B) crystalline, amorphous C) amorphous, crystalline D) pure SiO2, a mixture of SiO2 and carbonates E) breakable, not breakable Answer: C Answer: C Answer: C 2) How many isomers of C2H2Cl2 are polar? A) none B) 1 C) 2 D) 3 E) It is impossible to tell without more information. Answer: C Answer: C Answer: C 3)

Chemistry: The Central Science 13th Edition

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CHEM 712 Test

1) The molecular geometry of the H3O+ ion is ________. A) linear B) tetrahedral C) bent D) trigonal pyramidal E) octahedral Answer: D Answer: D Answer: D 2) Which one of the following atoms has the largest radius? A) As B) O C) Sn D) Cs E) Ca Answer: D Answer: D Answer: D 3) A typical triple bond ________. A) consists of one bond and two bonds B) consists

Chemistry: The Central Science 13th Edition

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Chem 720 Homework

1) When aqueous solutions of Pb(NO3)2 and NaCl are mixed, PbCl2 precipitates. The balanced net ionic equation is ________. A) Pb2+ (aq) + 2Cl- (aq) PbCl2 (s) B) Pb2+ (aq) + 2NO3 - (aq) Pb(NO3)2 (s) C) Pb2+ (aq) + 2NO3 - (aq) Pb(NO3)2 (aq) D) Pb(NO3)2 (aq) + 2NaCl (aq) PbCl2

Chemistry: The Central Science 13th Edition

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CHEM 722 Test 2

1) Which one of the following solutions will have the greatest concentration of hydroxide ions? A) 1.10 M rubidium hydroxide B) 0.368 M calcium hydroxide C) 0.368 M ammonium hydroxide D) 0.368 M potassium hydroxide E) 0.368 M sulfuric acid Answer: A Answer: A Answer: A 2) How many moles of B are present at 30 s? A) 2.4 x

Chemistry: The Central Science 13th Edition

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CHEM 734 Quiz

1) In the generation of most anions, the energy change (kJ/mol) that _______ an electron is ________. A) removes, positive B) adds, positive C) removes, negative D) adds, negative E) None of the above is correct. Answer: D Answer: D Answer: D 2) On a phase diagram, the melting point is the same as ________. A) the triple point B) the

Chemistry: The Central Science 13th Edition

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Chem 751 Final

1) On a phase diagram, the critical pressure is ________. A) the pressure required to melt a solid B) the pressure below which a substance is a solid at all temperatures C) the pressure above which a substance is a liquid at all temperatures D) the pressure at which a liquid changes to a

Chemistry: The Central Science 13th Edition

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Chem 769 Test 2

1) The lowest energy shell that contains f orbitals is the shell with n = ________. A) 3 B) 2 C) 4 D) 1 E) 5 Answer: C Answer: C Answer: C 2) The concentration of iodide ions in a 0.193 M solution of barium iodide is ________. A) 0.193 M B) 0.386 M C) 0.0965 M D) 0.579 M E) 0.0643 M Answer: B Answer:

Chemistry: The Central Science 13th Edition

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Chem 773 Midterm 1

1) Which atom has the largest number of neutrons? A) silicon-30 B) sulfur-36 C) argon-38 D) calcium-44 E) magnesium-24 Answer: D Answer: D Answer: D 2) Which of the following are combustion reactions? 1. CH4 (g) + O2 (g) CO2 (g) + H2O (l) 2. CaO (s) + CO2 (g) CaCO3 (s) 3. PbCO3 (s) PbO (s) + CO2 (g) 4. CH3OH (l)

Chemistry: The Central Science 13th Edition

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Chem 801

1) Bromine is much more apt to exist as an anion than is potassium. This is because ________. A) Bromine has a greater electron affinity than potassium does B) Bromine is bigger than potassium C) Bromine has a greater ionization energy than potassium does D) Bromine is a liquid and potassium is a solid E)

Chemistry: The Central Science 13th Edition

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CHEM 826 Test 1

1) All atoms of a given element have the same ________. A) mass number B) number of nucleons C) atomic mass D) number of neutrons E) atomic number Answer: E Answer: E Answer: E 2) Thermodynamic Quantities for Selected Substances at 298.15 K (25 oC) The value of S o for the decomposition of phosphorous trichloride into its constituent elements, 2PCl3

Chemistry: The Central Science 13th Edition

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CHEM 832 Homework

1) Calculate the freezing point of a 0.05500 m aqueous solution of NaNO3. The molal freezing-point-depression constant of water is 1.86 oC/m. A) 0.0286 B) -0.106 C) 0.106 D) -0.0562 E) -0.205 Answer: E Answer: E Answer: E 2) How many chiral centers are there in CH3CHClCH2CH2CHBrCH3? A) 0 B) 1 C) 2 D) 3 E) 4 Answer: C Answer: C Answer: C 3) Ka for

Chemistry: The Central Science 13th Edition

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Chem 868 Quiz 1

1) Of the following, a 0.2 M aqueous solution of ________ will have the highest freezing point. A) RbBr B) K2SO4 C) Sr(NO3)2 D) (NH4)2SO4 E) Fe(NO3)2 Answer: A Answer: A Answer: A 2) Of the following, ________ has a slight odor of bitter almonds and is toxic. A) NH3 B) N2O C) CO D) CH4 E) HCN Answer:

Chemistry: The Central Science 13th Edition

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Chem 870 Test 2

1) The Lewis structure of AsH3 shows ________ nonbonding electron pair(s) on As. A) 0 B) 1 C) 2 D) 3 E) This cannot be determined from the data given. Answer: B Answer: B Answer: B 2) Which group 6A element is a metal? A) tellurium and polonium B) sulfur C) selenium D) tellurium E) polonium Answer: E Answer: E Answer: E 3) Which one of the following

Chemistry: The Central Science 13th Edition

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Chem 872

1) How many protons does the Br- ion possess? A) 34 B) 36 C) 6 D) 8 E) 35 Answer: E Answer: E Answer: E 2) CO2 from hydrocarbon combustion creates a major environmental problem that is described as ________. A) the greenhouse effect B) photochemical smog C) acid rain D) stratospheric ozone depletion E) all of the above Answer: A Answer: A Answer: A 3) Which of

Chemistry: The Central Science 13th Edition

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CHEM 889 Test 2

1) The symbol for the spin magnetic quantum number is ________. A) ms B) n C) l D) ml E) sm Answer: A Answer: A Answer: A 2) Based on the crystal-field strengths Cl- < F- < H2O < NH3 < H2NC2H4NH2, which octahedral Ti (III) complex below has its d-d electronic transition at shortest wavelength? A) [Ti(NH3)6]3+

Chemistry: The Central Science 13th Edition

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The Electron Configuration Of A Ground-state Ag Atom Is ________

1) Which one of the following is an incorrect orbital notation? A) 2s B) 3py C) 3f D) 4dxy E) 4s Answer: C Answer: C Answer: C 2) The electron configuration of a ground-state Ag atom is ________. A) [Ar]4s24d9 B) [Kr]5s14d10 C) [Kr]5s23d9 D) [Ar]4s14d10 E) [Kr]5s24d10 Answer: B Answer: B Answer: B 3) When the electron in a hydrogen

Chemistry: The Central Science 13th Edition

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