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CH 301 - Dec. 7

# CH 301 - Dec. 7 - Rosecrans Drew Homework 10 Due Dec 7 2007...

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Rosecrans, Drew – Homework 10 – Due: Dec 7 2007, 11:00 pm – Inst: Brodbelt 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. Brodbelt CH301 HW 10 Due December 7, 11:00 pm 001 (part 1 of 1) 10 points “You can’t unscramble an egg” might be a layman’s view of 1. the first law of thermodynamics. 2. the second law of thermodynamics. 3. the third law of thermodynamics. 4. the woeful lament of a student contem- plating checking his work on an exam. 002 (part 1 of 1) 10 points Which substance has the higher molar en- tropy? 1. They are the same 2. C 2 H 6 (g) at 298 K and 1.00 atm 3. CH 4 (g)at 298 K and 1.00 atm 4. Unable to determine 003 (part 1 of 1) 10 points Without performing any calculations, de- termine whether the entropy of the system increases or decreases in SO 2 (g) + Br 2 (g) + 2 H 2 O( ) H 2 SO 4 (aq) + 2 HBr(aq) 1. increases 2. Unable to determine 3. The entropy does not change. 4. decreases 004 (part 1 of 1) 10 points The temperature of 2.00 mol Ne(g) is in- creased from 25 C to 200 C at constant pres- sure. Assume the heat capacity of Ne is 20.8 J/K-mol. Calculate the change in the entropy of neon. Assume ideal behavior. 1. +19.2 J · K - 1 2. +7.68 J · K - 1 3. +9.60 J · K - 1 4. - 7.68 J · K - 1 5. - 19.2 J · K - 1 005 (part 1 of 1) 10 points Consider the following processes. (Treat all gases as ideal.)

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CH 301 - Dec. 7 - Rosecrans Drew Homework 10 Due Dec 7 2007...

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