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Unformatted text preview: Pickering, Tracey – Quiz 6 – Due: Apr 27 2006, 10:00 am – Inst: John McDevitt 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points In a system at equilibrium at constant tem- perature and pressure, Δ H is necessarily equal to 1. P Δ V. 2. Δ G. 3. 0. 4. T Δ S. correct 5. Δ E. Explanation: Δ G = 0 for a system at equilibrium, so Δ G = Δ H- T Δ S 0 = Δ H- T Δ S Δ H = T Δ S 002 (part 1 of 1) 10 points A friend says that as a plant grows and takes an unordered set of molecules and puts them in a highly organized system the second law of thermodynamics is violated. Your best response is that 1. while the entropy involved in the plant growth decreased, the entropy in the universe increased as a result of this process. correct 2. you must be thinking of the third law....
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This note was uploaded on 06/23/2008 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas.
- Fall '07