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Exam2KEY - Name_ Chemistry 112 Exam 2 November 18, 2011...

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Name__________________________________________ Chemistry 112 Exam 2 November 18, 2011 Part I- Multiple Choice (3 points each). Please choose the single best answer. 1. Given these two energy diagrams for Reaction 1 and Reaction 2, which of the following is true? a) Reaction 1 is more thermodynamically favorable and faster. b) Reaction 1 is more thermodynamically favorable but slower. c) Reaction 2 is more thermodynamically favorable and faster. d) Reaction 2 is more thermodynamically favorable but slower. 2. Given the balanced equation for the detonation of TNT below, which of the following statements is true? 2 C 6 H 2 (NO 2 ) 3 CH 3 ( l ) ˠ 12 CO ( g ) + 5 H 2 ( g ) + 3 N 2 ( g ) + 2 C ( s ) + 6800 kJ a) The reaction is exothermic, and entropy increases. b) The reaction is endothermic, and entropy decreases. c) The reaction is exothermic, and entropy decreases. d) The reaction is endothermic, and entropy increases. 3. A chemist who has just moved from rural Montana to New York City is surprised to find that her automobile collision insurance has quadrupled in price. She calls her insurance agent to complain, saying that she is the same driver she has always been. How can the agent justify the increased insurance cost in a way that will best satisfy the chemist? a) Explain using the First Law of Thermodynamics. b) Explain that New Yorkers have a lower energy of aggravation. c) Explain using the collision theory of reaction rates. d) Explain using the chemists’ rule of thumb for temperature and reaction rates. 4 . Which of these biological molecules are not polymers of simple building blocks? a) proteins b) lipids c) DNA d) polysaccharides 5. Which of the following is not a function of proteins? a) transport of O 2 in the bloodstream b) cellular catalysts c) major components of hair and muscle d) structural basis of cell membranes 6. Aspirin blocks the activity of an enzyme that makes prostaglandins, mediators of fever, pain, and inflammation. Aspirin is a(n) a) restriction enzyme b) enzyme inhibitor c) steroid d) antibody
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2 7. Which of the following cases hinged on fiber evidence analysis? a) Murder of Nicole Brown Simpson b) Atlanta Child Murders c) Murder of Marilyn Sheppard d) The Sonia Cacy case 8. For which of the following types of evidence would a microscope NOT be used for analysis? a) accelerants b) bullets c) fingerprints d) fibers 9. Why does DNA forensic analysis generally not require analysis of the entire DNA molecule? a) Forensic analysts can charge more that way.
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Exam2KEY - Name_ Chemistry 112 Exam 2 November 18, 2011...

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