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C17HW11a_18 - View Attempt Vie Attempt 18 of unlimited T it...

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12/18/11 View Attempt 1/4 learn.uh.edu/webct/urw/«/ViewStudentAttempt.dowebct?attempt=5174553« VieZ Attempt 18 of unlimited Title: C17HW11a Started: November 21, 2011 10:39 PM Submitted: November 21, 2011 10:56 PM Time spent: 00:17:33 Total score: 9/10 = 90% Total score adjusted by 0.0 Maximum possible score: 10 Done 1. How many of the following processes are accompanied by a positive entropy change? heating a pot of water spilling a glass of milk dissolving sugar in water melting an icicle dissolving alcohol in water Student Response Correct AnsZer A. 1 B. 2 C. 3 D. 4 E. 5 Score: 1/1 2. Given the following standard molar entropies, calculate ƩS° for the reaction: CH 4 (g) + 2 O 2 (g) ĺ CO 2 (g) + H 2 O (g) J /mol•K 186.2 205.0 213.6 188.7 Student Response Correct AnsZer A. 5.2 B. 11.1 C. 793.5 D. -11.1 E. -193.9 Score: 1/1
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12/18/11 View Attempt 2/4 learn.uh.edu/webct/urw/«/ViewStudentAttempt.dowebct?attempt=5174553« 3. Which of the following reactions leads to an increase in entropy of the system?
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