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Chapter 1 1 What is the physical state in which matter has no specific shape
Chemistry: The Central Science, 13e (Brown et al.) Chapter 1 Introduction: Matter and Measurement 1.1 Multiple-Choice Questions 1) What is the physical state in which matter has no specific shape but does have a specific volume? A) gas B) solid […]
Chapter 1 2 The distance from the Earth to the Moon is approximately
31) If an object, beginning at rest, is moving at a speed of 700 m/s after 2.75 min, its rate of acceleration (in m/s2) is ________. (Assume that the rate of acceleration is constant.) A) 1.16 × 105 B) 255 […]
Chapter 1 3 A cube of an unknown metal measures 0.250 cm on one side
15) An object measuring 0.76 decimeters will have a length of ________ centimeters. A) 7.6 B) 0.076 C) 0.0076 D) 1100 E) 0.00076 Answer: A Diff: 1 Var: 6 Page Ref: Sec. 1.4 LO: 1.4, 1.6 GO: G4 16) What […]
Chapter 10 2 A closed-end manometer was attached to a vessel containing argon
21) The volume of 0.25 mol of a gas at 72.7 kPa and 15 °C is ________ m3. A) 8.1 × 10-5 B) 1.2 × 10-4 C) 4.3 × 10–4 D) 8.2 × 10-3 E) 2.2 × 10-1 Answer: D […]
Chapter 10 3 Kinetic-molecular theory assumes that attractive and repulsive
4) A fixed amount of gas at 25.0 °C occupies a volume of 10.0 L when the pressure is 751 torr. Use Boyle’s law to calculate the pressure (torr) when the volume is reduced to 7.25 L at a constant […]
Chapter 11 2 The phase diagram of a substance is given above.
11.2 Bimodal Questions 1) Based on molecular mass and dipole moment of the five compounds in the table below, which should have the highest boiling point? A) CH3CH2CH3 B) CH3OCH3 C) CH3Cl D) CH3CHO E) CH3CN 20 Answer: E Diff: […]
Chapter 13 1 the argon spontaneously disperses throughout the neon
Chemistry: The Central Science, 13e (Brown et al.) Chapter 13 Properties of Solutions 13.1 Multiple-Choice Questions 1) The dissolution of water in octane (C8H18) is prevented by ________. A) London dispersion forces between octane molecules B) hydrogen bonding between water […]
Chapter 13 3 What is the molality of ammonium chloride in the solution
25) A solution is prepared by dissolving 10.0 g of benzene (C6H6) in 282 g of carbon tetrachloride (CCl4). The concentration of benzene in this solution is ________ molal. The molar masses of C6H6 and CCl4 are 78.1 g/mol and […]
Chapter 14 2 A reaction was found to be second order in carbon monoxide
17) At elevated temperatures, methylisonitrile (CH3NC) isomerizes to acetonitrile (CH3CN): CH3NC (g) → CH3CN (g) At the start of the experiment, there are 0.200 mol of reactant (CH3NC) and 0 mol of product (CH3CN) in the reaction vessel. After 25 […]
Chapter 15 1 What role did Karl Bosch play in development of
Chemistry: The Central Science, 13e (Brown et al.) Chapter 15 Chemical Equilibrium 15.1 Multiple-Choice Questions 1) At equilibrium, ________. A) all chemical reactions have ceased B) the rates of the forward and reverse reactions are equal C) the rate constants […]
Chapter 15 2 A vessel is charged with PCl5 giving an initial pressure
12) The equilibrium constant (Kp) for the interconversion of PCl5 and PCl3 is 0.0121: PCl5 (g) PCl3 (g) + Cl2 (g) A vessel is charged with PCl5 giving an initial pressure of 0.123 atm. At equilibrium, the partial pressure of […]
Chapter 16 1 The molar concentration of hydronium ion in pure water
Chemistry: The Central Science, 13e (Brown et al.) Chapter 16 Acid-Base Equilibria 16.1 Multiple-Choice Questions 1) According to the Arrhenius concept, an acid is a substance that ________. A) is capable of donating one or more H+ B) causes an […]
Chapter 16 2 The Concentration Hydroxide Ion This Solution
18) HZ is a weak acid. An aqueous solution of HZ is prepared by dissolving 0.020 mol of HZ in sufficient water to yield 1.0 L of solution. The pH of the solution was 4.93 at 25.0 °C. The Ka […]
Chapter 16 3 What is the pH of a 0.020 M aqueous solution of barium hydroxide
12) What is the pOH of an aqueous solution at 25.0 °C in which [OH–] is 0.0010 M? A) 11.00 B) -3.00 C) 3.00 D) -11.00 E) 6.91 Answer: C Diff: 2 Var: 9 Page Ref: Sec. 16.4 LO: 16.4 […]
Chapter 17 1 Which one of the following pairs cannot be mixed together
Chemistry: The Central Science, 13e (Brown et al.) Chapter 17 Additional Aspects of Aqueous Equilibria 17.1 Multiple-Choice Questions 1) Which one of the following pairs cannot be mixed together to form a buffer solution? A) HONH2, HONH3Cl B) NaCl, HCl […]
Chapter 17 2 The concentration of acetic acid in the sample was
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 5) Calculate the percent ionization of nitrous acid in a solution that is 0.241 M in nitrous […]
Chapter 18 1 which sequence of mole fractions is the correct one
Chemistry: The Central Science, 13e (Brown et al.) Chapter 18 Chemistry of the Environment 18.1 Multiple-Choice Questions 1) In the troposphere, temperature ________ with increasing altitude, while in the stratosphere, temperature ________ with increasing altitude. A) increases, increases B) decreases, […]
Chapter 18 2 Sulfur dioxide is not released into the atmosphere in any
18) Acid rain typically has a pH of about ________. A) 7 B) 5 C) 4 D) 2 E) 1 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 18.2 LO: 18.2 GO: G2 19) Sulfur dioxide is not released […]
Chapter 19 1 Given The Following Table Thermodynamic Data Complete
Chemistry: The Central Science, 13e (Brown et al.) Chapter 19 Chemical Thermodynamics 19.1 Multiple-Choice Questions 1) The first law of thermodynamics can be given as ________. A) ΔE = q + w B) Δ = – C) for any spontaneous […]
Chapter 19 2 The value of ΔH° for the formation of POCl3 from its constituent elements
24) The value of ΔH° for the decomposition of gaseous sulfur dioxide to solid elemental sulfur and gaseous oxygen, SO2 (g) → S (s,rhombic) + O2 (g) is ________ kJ/mol. A) 0.0 B) +135.0 C) -135.90 D) -269.9 E) +269.9 […]
Chapter 19 3 For a reaction to be spontaneous at low temperature
8) 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 Diff: 2 Var: 3 Page Ref: Sec. 19.4 LO: 19.4 GO: G2 […]
Chapter 2 1 A molecule of water contains hydrogen and oxygen in
1 Chemistry: The Central Science, 13e (Brown et al.) Chapter 2 Atoms, Molecules, and Ions 2.1 Multiple-Choice Questions 1) A molecule of water contains hydrogen and oxygen in a 1:8 ratio by mass. This is a statement of ________. A) […]
Chapter 2 2 Which of the following compounds would you expect to be ionic
21 72) The species ________ contains 16 neutrons. A) 31P B) 34S2- C) 36Cl D) 80Br– E) 16O 73) Which species is an isotope of 39Cl? A) 40Ar+ B) 34S2- C) 36Cl– D) 80Br E) 39Ar Answer: C Diff: 1 […]
Chapter 2 3 Magnesium and sulfur form an ionic compound with the formula
48) The correct name for H2SO4 is ________. A) sulfuric acid B) sulfurous acid C) hydrosulfuric acid D) hydrosulfic acid E) sulfur hydroxide Answer: A Diff: 2 Var: 1 Page Ref: Sec. 2.8 LO: 2.8 GO: G2 49) The correct […]
Chapter 2 4 How many electrons are there in one atom of 71Ga
A) 74 B) 112 C) 258 D) 110 E) 184 Answer: D Diff: 3 Var: 4 Page Ref: Sec. 2.3 LO: 2.3 GO: G2 14) How many protons are there in one atom of 71Ga? A) 40 B) 70 C) […]
Chapter 20 1 Which substance is the oxidizing agent in the following reaction
Chemistry: The Central Science, 13e (Brown et al.) Chapter 20 Electrochemistry 20.1 Multiple-Choice 1) Which element is reduced in the reaction below? Fe(CO)5 (l) + 2HI (g) → Fe(CO)4I2 (s) + CO (g) + H2 (g) A) Fe B) C […]
Chapter 20 2 The relationship between the change in Gibbs free energy
29) The standard cell potential (E°cell) for the voltaic cell based on the reaction below is ________ V. 2Cr (s) + 3Fe2+ (aq) → 3Fe (s) + 2Cr3+ (aq) A) +0.30 B) +2.80 C) +3.10 D) +0.83 E) -0.16 Answer: […]
Chapter 21 1 What happens to the mass number and the atomic number
Chemistry: The Central Science, 13e (Brown et al.) Chapter 21 Nuclear Chemistry 21.1 Multiple-Choice Questions 1) All atoms of a given element have the same ________. A) mass number B) number of nucleons C) atomic mass D) number of neutrons […]
Chapter 21 2 Radium undergoes alpha decay. The product of this reaction
A) B B) N C) C D) O E) none of the above Answer: B Diff: 2 Var: 1 Page Ref: Sec. 21.1 LO: 21.1 GO: G2 6) In balancing the nuclear reaction Br → E + e, the identity […]
Chapter 22 2 Which halogen can react with fluorine to form the compound XF 7
5) Hydrogen can have oxidation states of ________. A) +1 only B) -1, 0, and +1 C) 0 and +1 only D) -1 and +1 only E) 0 only Answer: B Diff: 1 Var: 1 Page Ref: Sec. 22.2 LO: […]
Chapter 22 3 Which compound would produce a basic aqueous solution
6) Which compound would produce an acidic aqueous solution? A) HF B) MgH2 C) C2H2 D) KH E) H2 Answer: A Diff: 1 Var: 50+ Page Ref: Sec. 22.2 LO: 22.2 – 22.11 GO: G2 7) The oxidation state of […]
Chapter 23 1 What two oxidation states are more frequently observed
Chemistry: The Central Science, 13e (Brown et al.) Chapter 23 Transition Metals and Coordination Chemistry 23.1 Multiple-Choice Questions 1) Chalcocite, chalcopyrite, and malachite are sources of which metal? A) manganese B) copper C) titanium D) iron E) zinc Answer: B […]
Chapter 23 2 What is the metal ion in the porphyrin of heme
A) Ca2+ B) Fe3+ C) CN– D) Fe(CN)63- E) Fe2+ Answer: C Diff: 1 Var: 1 Page Ref: Sec. 23.2 LO: 23.2 GO: G2 11) What is the charge of the central metal ion in Ca3[Fe(CN)6]2? A) 0 B) 1+ […]
Chapter 24 2 The hybridization of the central carbon atom in an aldehyde
17) The octane number of straight-run gasoline is about ________. A) 0 B) 25 C) 50 D) 75 E) 93 Answer: C Diff: 1 Var: 1 Page Ref: Sec. 24.2 LO: 24.2 GO: G2 18) Alkenes have the general formula […]
Chapter 3 1 When the following equation is balanced, the coefficients are
Chemistry: The Central Science, 13e (Brown et al.) Chapter 3 Stoichiometry: Calculations with Chemical Formulas and Equations 3.1 Multiple-Choice Questions 1) When the following equation is balanced, the coefficients are ________. C8H18 + O2 → CO2 + H2O A) 2, […]
Chapter 3 2 When the following equation is balanced, the coefficient
19) When the following equation is balanced, the coefficient of dinitrogen pentoxide is ________. N2O5 (g) + H2O (l) → HNO3 (aq) A) 1 B) 2 C) 3 D) 4 E) 5 Answer: A Diff: 2 Var: 1 Page Ref: […]
Chapter 3 3 What is the mass % of carbon in dimethyl sulfoxide
3.3 Algorithmic Questions 1) When the following equation is balanced, the coefficients are ________. C8H18 + O2 → CO2 + H2O A) 4, 50, 16, 18 B) 1, 5, 2, 2 C) 2, 2, 7, 1 D) 1, 13, 8, […]
Chapter 4 1 Cobalt More Active Than nickel But Less Active
Chemistry: The Central Science, 13e (Brown et al.) Chapter 4 Aqueous Reactions and Solution Stoichiometry 4.1 Multiple Choice Questions 1) Of the species below, only ________ is not an electrolyte. A) HCl B) Rb2SO4 C) Ar D) KOH E) NaCl […]
Chapter 4 3 How many grams of CH3OH must be added to water to prepare
took 23.9 mL of the base to reach the endpoint of the titration. The concentration (M) of the acid was ________. A) 0.0102 B) 0.00508 C) 0.0204 D) 0.102 E) 0.227 Answer: B Diff: 4 Var: 1 Page Ref: Sec. […]
Chapter 5 1 A chemical reaction that releases heat to the surroundings
Chemistry: The Central Science, 13e (Brown et al.) Chapter 5 Thermochemistry 5.1 Multiple Choice Questions 1) Objects can possess energy as ________. (a) endothermic energy (b) potential energy (c) kinetic energy A) a only B) b only C) c only […]
Chapter 5 2 The specific heat capacity of lead is 0.13 J/g-K
27) The value of ΔH° for the reaction below is -1107 kJ: 2Ba (s) + O2 (g) → 2BaO (s) How many kJ of heat are released when 5.75 g of Ba (s) reacts completely with oxygen to form BaO […]
Chapter 5 3 The respective fuel values for protein, fat, and carbohydrate
60) Given the data in the table below and ΔH°rxn for the reaction SO2Cl2 (g) + 2H2O (l) → H2SO4 (l) + 2HCl (g) ΔH° = -62 kJ ΔH°f of HCl (g) is ________ kJ/mol. A) -184 B) 60 C) […]
Chapter 6 1 Of the following transitions in the Bohr hydrogen atom
Chemistry: The Central Science, 13e (Brown et al.) Chapter 6 Electronic Structure of Atoms 6.1 Multiple-Choice Questions 1) Which one of the following is correct? A) ν + λ = c B) ν ÷ λ = c C) ν = […]
Chapter 6 2 The wavelength of an electron whose velocity is 1.7
11) What is the wavelength of light (nm) that has a frequency of 6.44 × 1013 s-1? A) 4660 nm B) 6490 nm C) 4.66 × 10-8 nm D) 6.49 × 10-8 nm E) 932 nm Answer: A Diff: 1 […]
Chapter 6 3 The 3p subshell in the ground state of atomic silicon contains
72) The 3p subshell in the ground state of atomic silicon contains ________ electrons. A) 2 B) 6 C) 8 D) 10 E) 36 Answer: A Diff: 1 Var: 1 Page Ref: Sec. 6.8 LO: 6.8 GO: G2 73) The […]
Chapter 7 1 In which set of elements would all members be expected to have
Chemistry: The Central Science, 13e (Brown et al.) Chapter 7 Periodic Properties of the Elements 7.1 Multiple-Choice Questions 1) In which set of elements would all members be expected to have very similar chemical properties? A) O, S, Se B) […]
Chapter 7 3 Element Reacts With Oxygen Form Oxide With
5) ________ is isoelectronic with helium. A) H– B) H+ C) H D) B3- E) N3- Answer: A Diff: 1 Var: 50+ Page Ref: Sec. 7.3 LO: 7.3 GO: G2 6) ________ is isoelectronic with krypton. A) Se2– B) Se3- […]
Chapter 8 2 The Lewis structure of PF3 shows that the central phosphorus atom
33) Given the electronegativities below, which covalent single bond is most polar? Element: H C N O Electronegativity: 2.1 2.5 3.0 3.5 A) C—H B) N—H C) O—H D) O—C E) O—N Answer: C Diff: 1 Var: 1 Page Ref: […]
Chapter 9 1 The electron-domain geometry and the molecular geometry
Chemistry: The Central Science, 13e (Brown et al.) Chapter 9 Molecular Geometry and Bonding Theories 9.1 Multiple-Choice Questions 1) The basis of the VSEPR model of molecular bonding is ________. A) regions of electron density on an atom will organize […]
Chapter 9 3 Using the VSEPR model, the molecular geometry of the central
3) The H-C-H bond angle in the CH4 ion is approximately ________. A) 180 B) 120 C) 109.5 D) 60 E) 90 Answer: C Diff: 2 Var: 4 Page Ref: Sec. 9.2 LO: 9.2 GO: G2 4) The bond angle […]