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Unformatted text preview: 1 Chemistry 301 Exam II Fall, 2002 Name ________________________ This is a closed book, closed note exam. A sheet of possibly useful equations is included as the last page of the exam. Show all of your work. Answers given without showing how they were obtained will be downgraded. Be sure to include units. Partial answers may receive partial credit. If you have a question, raise your hand and the instructor will come to your seat. Do not come to the front of the room ! R = 0.08205 L atm/(mol K) = 8.314 J/(mol K) = 1.987 cal/(mol K) 1 atm = 760 mm Hg = 101 kPa Molar heat capacities H f at 298 K in J/(mol k) in kJ/mol H 2 O(l) 75.30 -285.84 H 2 O(g) 33.58 -241.84 Molar hear of vaporization H 2 O, 373 K = 40.79 kJ/mol Vapor pressure of water at 20C = 17.54 mm Hg "He was forced, therefore, in the sad dying fall of middle age, to a radical reevaluation of everything he had learned up to then ... He found himself, in short, restating Gibbs' prediction in social terms, and envisioned a heat-death for his culture in which ideas, like heat-energy, would no longer be transferred, since each point in it would ultimately have the same quantity of energy; and intellectual motion would, accordingly, cease." from Entropy by Thomas Pynchon 2...
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