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Chapter 1 1 Kilograms Contains This Many Grams
Chapter 1: Chemical Foundations 1. Which of the following is an example of a quantitative observation? A) The piece of metal is longer than the piece of wood. B) Solution 1 is much darker than solution 2. C) The liquid […]
Chapter 1 2 During Physics Experiment Electron Accelerated Percent
55. During a physics experiment, an electron is accelerated to 93 percent of the speed of light. What is the speed of the electron in miles per hour? (speed of light = 3.00 108 m/s, 1 km = 0.6214 […]
Chapter 10 1 Hydrogen bonds account for which of the following observation
Chapter 10: Liquids and Solids 1. Order the intermolecular forces (dipole-dipole, London dispersion, ionic, and hydrogen- bonding) from weakest to strongest . A) dipole-dipole, London dispersion, ionic, and hydrogen-bonding B) London dispersion, dipole-dipole, hydrogen-bonding, and ionic C) hydrogen-bonding, dipole-dipole, London […]
Chapter 10 2 On the basis of your knowledge of bonding in liquids and solids
A) The packing is done in a way that minimizes repulsions among ions with like charges. B) The packing arrangement maximizes electrostatic attractions among oppositely charged ions. C) For spheres of a given diameter, tetrahedral holes are larger than octahedral […]
Chapter 11 1 Which of the following concentration measures will change in
Chapter 11: Properties of Solutions 1. In a 0.1 molar solution of NaCl in water, which one of the following will be closest to 0.1? A) The mole fraction of NaCl. B) The mass fraction of NaCl. C) The mass […]
Chapter 11 2 and solute-solvent interactions are quite different
solution | Raoult’s law MSC: Conceptual 60. A liquid-liquid solution is called an ideal solution if: I. It obeys PV = nRT. II. It obeys Raoult’s law. III. Solute-solute, solvent-solvent, and solute-solvent interactions are very similar. IV. Solute-solute, solvent-solvent, and […]
Chapter 12 1 The average rate of disappearance of ozone in the reaction
Chapter 12: Chemical Kinetics 1. The average rate of disappearance of ozone in the reaction is found to be atm over a certain interval of time. What is the rate of appearance of during this interval? A) atm/s B) atm/s […]
Chapter 12 2 A particular first-order reaction has a rate constant of
68. The reaction is known to be zero order in A with a rate constant of 5.0 10–2 mol/L s at 25°C. An experiment was run at 25°C where [A]0 = M. The half-life for the reaction is A) […]
Chapter 12 3 Determine The Magnitude The Frequency Factor
and the mechanism MSC: Conceptual Under certain conditions the reaction H2O2 + 3I– + 2H+ → I3– + 2H2O occurs by the following series of steps: k1 Step 1. H2O2 + H+ H3O2+ k–1 111. Which of the steps would […]
Chapter 13 1 Determine The Equilibrium Constant For The
Chapter 13: Chemical Equilibrium MULTIPLE CHOICE 1. Which of the following is true about a system at equilibrium? A) The concentration(s) of the reactant(s) is equal to the concentration(s) of the product(s). B) No new product molecules are formed. C) […]
Chapter 13 2 what is the value of the equilibrium constant
KEY: Chemistry | general chemistry | chemical equilibrium MSC: Quantitative 47. Initially 2.0 moles of N2(g) and 4.0 moles of H2(g) were added to a 1.0-liter container and the following reaction then occurred: 3H2(g) + N2(g) 2NH3(g) The equilibrium concentration […]
Chapter 14 1 The species Cl– is not a good base in aqueous solution
Chapter 14: Acids and Bases 1. For the equilibrium that exists in an aqueous solution of nitrous acid (HNO2, a weak acid), the equilibrium constant expression is: A) K = B) K = C) K = [H+][NO2–] D) K = […]
Chapter 14 2 The pain killer morphine is a weak base when added to
pH of a solution MSC: Quantitative 77. The pain killer morphine is a weak base when added to water. The Kb is 1.6 10–6. What is the pH of a 4.33 10–3 M solution of morphine? A) 4.08 […]
Chapter 15 1 What is the equilibrium concentration of NH4+ ions
Chapter 15: Acid-Base Equilibria 1. Calculate the [H+] in a solution that is 0.16 M in NaF and 0.25 M in HF. (Ka = 7.2 10–4) A) 7.2 10–4 M B) 1.6 M C) 1.1 10–3 M […]
Chapter 15 2 titration of a weak base by a strong acid
MSC: Quantitative 61. A 75.0-mL sample of 0.0500 M HCN (Ka = 6.2 10–10) is titrated with 0.277 M NaOH. What is the [H+] in the solution after 3.0 mL of 0.277 M NaOH have been added? A) 4.6 […]
Chapter 16 1 The solubility of CaSO4 in pure water at 0oC is 1.14 gram
Chapter 16: Solubility and Complex Ion Equilibria 1. The molar solubility of PbI2 is 1.52 10–3 M. Calculate the value of Ksp for PbI2. A) 3.51 10−9 B) 4.62 10−6 C) 1.40 10−8 D) 1.52 10−3 E) none of […]
Chapter 16 2 Sodium chloride is added slowly to a solution that
54. Determine the ion product. A) 1.1 10–4 B) 1.5 10–2 C) 7.8 10–3 D) 8.1 10–4 E) none of these 55. Will precipitation occur? A) Yes. B) No. C) Maybe, it depends on the temperature. […]
Chapter 17 1 Ten identical coins are shaken vigorously in a cup
Chapter 17: Spontaneity, Entropy, and Free Energy 1. For which process is S negative? A) evaporation of 1 mol of CCl4(l) B) mixing 5 mL ethanol with 25 mL water C) compressing 1 mol Ne at constant temperature from 1.5 […]
Chapter 17 2 Given The Following Free Energies Formation
A) + + + B) + – – C) – + + D) – – + E) – – – Consider the reaction 2N2O5(g) 4NO2(g) + O2(g) at 25°C for which the following data are relevant: Hf° S° N2O5 11.289 […]
Chapter 18 1 The following unbalanced equation represents a reaction that occurs
Chapter 18: Electrochemistry 1. Given the following reaction in acidic media: Fe2+ + Cr2O72– → Fe3+ + Cr3+ answer the following question: The coefficient for water in the balanced reaction is: A) 1 B) 3 C) 5 D) 7 E) […]
Chapter 18 2 The standard free energies of formation of several species are
B) C) D) E) none of these 69. For a reaction in a voltaic cell both H° and S° are positive. Which of the following statements is true? A) cell will increase with an increase in temperature. B) […]
Chapter 18 3 What The Value The Reaction Quotient
104. For the cell Cu(s) | Cu2+ || Ag+ | Ag(s), the standard cell potential is 0.46 V. A cell using these reagents was made, and the observed potential was 0.16 V at 25oC. What is a possible explanation for […]
Chapter 19 1 It is desired to determine the concentration of arsenic
Chapter 19: The Nucleus: A Chemist’s View 1. Identify the missing particle in the following equation: U → He + ? A) Pu B) Th C) Th D) U E) none of these 2. The ratio of the atomic radius […]
Chapter 19 2 taking the atom through many transformations to end up
C) Ti D) Ar E) none of these 46. Identify the missing particle in the following nuclear equation: Al + __________ → Na + A) n B) n C) e D) e E) 2 n ANS: A PTS: 1 […]
Chapter 2 1 The first people to attempt to explain why chemical changes
Chapter 2: Atoms, Molecules, and Ions 1. The first people to attempt to explain why chemical changes occur were A) alchemists B) metallurgists C) physicians D) physicists E) the Greeks 2. The Greeks proposed that matter consisted of four fundamental […]
Chapter 2 2 Since According Dalton Atoms Given Element Are
nomenclature of simple compound | ionic compound MSC: Conceptual 52. How many oxygen atoms are there in one formula unit of Ca3(PO4)2? A) 2 B) 4 C) 6 D) 8 E) none of these 53. How many oxygen atoms are […]
Chapter 20 1 Which group shows the correct order of first ionization energy
Chapter 20: The Representative Elements 1. In a given period this group has the element with the largest atomic radius. A) Group 1A B) Group 2A C) Group 3A D) Group 4A E) Group 5A 2. Which of the following […]
Chapter 20 2 The strength of the bond in nitrogen is important
A) N B) P C) As D) Sb E) Bi 79. Why is nitrogen not able to form molecules with five covalent bonds? A) Because nitrogen can only form a trigonal bipyramidal shape when it bonds with other elements. B) […]
Chapter 21 1 Why do transition metals show a lot of chemical similarities
Chapter 21: Transition Metals and Coordination Chemistry 1. Transition metals display great similarities A) within a given period B) within a given vertical group C) with the semimetals D) all of these E) A and B only 2. Which of […]
Chapter 21 2 The Dorbital Splitting Diagram For This Complex
79. NiCl42– (tetrahedral) A) 0 B) 1 C) 2 D) 4 E) 5 80. CoF63– (weak field) A) 0 B) 1 C) 2 D) 4 E) 5 ANS: D PTS: 1 DIF: Moderate REF: 21.6 KEY: Chemistry | general chemistry […]
Chapter 22 1 Which of the following compounds can exhibit geometrical isomerism
Chapter 22: Organic and Biological Molecules 1. Name the following: A) isopropane B) methylpentane C) methylbutane D) n-pentane E) dodecane 2. Name the following: A) n-heptane B) 2-methyl-2-ethylbutane C) 3,3-dimethylpentane D) 2,2-diethylpropane E) none of these ANS: C PTS: 1 […]
Chapter 22 2 Which The Following The Best Description
78. Classify the following molecule: A) primary amine B) secondary amine C) tertiary amine D) amino acid E) peptide ANS: A PTS: 1 DIF: Easy REF: 22.4 KEY: Chemistry | organic chemistry | amines | structural characteristic | classification MSC: […]
Chapter 22 3 How many possible sequences can be made for a polypeptide
E) a chain of nucleotides connected by phosphodiester bonds 122. The structures of proteins are partially determined by the order of various amino acids in the macromolecule. This level of structural determination is known as A) primary structure B) secondary […]
Chapter 3 1 What The Mass Atoms Copper Grams
Chapter 3: Stoichiometry 1. The atomic mass of rhenium is 186.2. Given that 37.1% of natural rhenium is rhenium-185, what is the other stable isotope? A) B) C) D) E) 2. Consider the element indium, atomic number 49, atomic mass […]
Chapter 3 2 The Refining Aluminum From Bauxite Ore
A) 3 6 6 3 4 B) 8 6 5 10 5 C) 5 10 10 5 5 D) 1 2 2 1 1 E) none of these 76. When the following equation is balanced, what is the sum of […]
Chapter 4 1 An unknown substance dissolves readily in water
Chapter 4: Chemical Reactions and Solutions Stoichiometry 1. An unknown substance dissolves readily in water but not in benzene (a nonpolar solvent). Molecules of what type are present in the substance? A) neither polar nor nonpolar B) polar C) either […]
Chapter 4 2 What is the mass percentage of barium chloride
62. If all of the chloride in a 3.734-g sample of an unknown metal chloride is precipitated as AgCl with 70.90 mL of 0.2010 M AgNO3, what is the percentage of chloride in the sample? A) 50.52% B) 13.53% C) […]
Chapter 5 1 A glass column is filled with mercury and inverted in
Chapter 5: Gases 1. Gases generally have A) low density B) high density C) closely packed particles D) no increase in volume when temperature is increased E) no decrease in volume when pressure is increased 2. Pressure is A) defined […]
Chapter 5 2 Calcium Hydride Combines With Water According
A) 8.76 L B) 17.5 L C) 4.38 L D) 19.1 L E) 3.14 L 71. At 1000°C and 10. torr, the density of a certain element in the gaseous state is . The element is: A) F B) He […]
Chapter 6 1 What The Kinetic Energy 156kg Object Moving
Chapter 6: Thermochemistry 1. A gas absorbs 0.0 J of heat and then performs 30.7 J of work. The change in internal energy of the gas is A) 61.4 J B) 30.7 J C) –61.4 J D) –30.7 J E) […]
Chapter 6 2 will undergo a smaller temperature change than the aluminum
56. The heat of combustion of benzene, C6H6, is –41.74 kJ/g. Combustion of 2.82 g of benzene causes a temperature rise of 3.29°C in a certain bomb calorimeter. What is the heat capacity of this bomb calorimeter? A) 387 kJ/°C […]
Chapter 7 1 Which The Following Frequencies Corresponds Light With
Chapter 7: Atomic Structure and Periodicity 1. When ignited, a uranium compound burns with a green flame. The wavelength of the light given off by this flame is greater than that of A) red light B) infrared light C) radio […]
Chapter 7 2 Which of the following electron configurations is correct
83. Which of the following electron configurations is correct? A) Ga: [Kr]4s23d104p1 B) Mo: [Kr]5s24d5 C) Ca: [Ar]4s13d10 D) Br: [Kr]4s23d104p7 E) Bi: [Xe]6s24f145d106p3 ANS: E PTS: 1 DIF: Easy REF: 7.11 KEY: Chemistry | general chemistry | atomic theory […]
Chapter 8 1 The force between two bodies having identical electric charges
Chapter 8: Bonding: General Concepts 1. The force between two bodies having identical electric charges A) is a force of repulsion B) is a force of repulsion if the charges are negative, and one of attraction if they are positive […]
Chapter 8 2 Chemistry General Chemistry Bonding Molecular Geometry The
B) I, III, IV, VI C) III, V, VI D) I, IV, VI E) I, II, IV, VI 79. These molecules have a zero net dipole moment. A) III, V B) I, III, IV C) III, IV, V D) I, […]
Chapter 9 1 The hybridization of the central atom in ClF2+
Chapter 9: Covalent Bonding: Orbitals 1. The hybridization of the carbon atom in the cation CH3+ is: A) sp2 B) sp3 C) dsp D) sp E) none of these 2. In the molecule C2H4 the valence orbitals of the carbon […]
Chapter 9 2 For how many of the following does the bond order decrease
C) O22– D) O2+ E) O22+ 59. The fact that O2 is paramagnetic can be explained by A) the Lewis structure of O2 B) resonance C) a violation of the octet rule D) the molecular orbital diagram for O2 E) […]