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Choose the best answer from the following questions. 1. Which of the following compounds has the highest solubility in water? a. pent-2-ene b. 3-methylbutan-2-one c. pentanoic acid d. pentanol 2. Which of the following is a structural isomer of C,H,G? a. 3,3-dimethylpentane b. 3-methylhexane c. heptane d. All of the above 3. Which of the following sets of bonds is listed in order of decreasing bond polarity? a. H-H, H-OH-N, H-F b. H-F, H-N, H-O, H-H c. H-F, H-OH-N, H-H d. H-O, H-F, H-N, H-H 4. Which solid substance has the highest melting point? a. Zna) b. SiO2) C. H.O. d. KS 5. If the initial rate of reaction is observed to increase by a factor of 9 when the concentration of a reactant is tripled, what is the order of reaction with respect to that reactant? a. O b. 1 c. 2 d. 3 6. A 4.0 g sample of heated metal is placed in a coffee-cup calorimeter that contains 1.00kg of water. The temperature of the water increases by 5.0C. How much thermal energy was transferred to the water? a. 21 kJ/g b. 83 J/g C. 5.2 kJ/g d. 5.4 kJ/g 7. Determine the pH of a 0.032 mol/L solution of NaOH (aq), a strong base. a. 1.49 b. 1.5 C. 12.51 d. 12.5 a. 8. Adding energy to an exothermic reaction at equilibrium Causes a decrease in the concentration of the reactants. b. Causes a decrease in concentration of the products. C. Does not affect the system. d. Causes an increase in the concentration of the products. 9. Which of the following statements is true for a zinc-copper galvanic cell? a. Electrons flow from the copper electrode to the zinc electrode. b. Electrons flow from the zinc electrode to the copper electrode. C. The anions in the salt bridge move toward the copper electrode. d. The cations in the salt bridge move toward the copper electrode. e. B and C are correct f. B and D are correct 10. What is the value of AE, for the cell with the following overall reaction? Cr2+ (aq) + Cu2+ (aq) Cut (aq) + Cr3+ (aq) a) +0.34 V b) -0.34 V C) +0.66 V d) -0.66 V 3