*79. mmh (a) After 6.00 kg of water at 85.0 °C is mixed in a perfect thermos with 3.00 kg of ice at 0.0 °C, the mixture is allowed to reach equilibrium. When heat is added to or removed from a solid or liquid of mass m and specific heat capacity c, the change in entropy can be shown to be AS = mc In(T;/T;), where T; and T; are the initial and final Kelvin temperatures. Using this expression and the change in entropy for melting, find the change in entropy that occurs. (b) Should the entropy of the universe increase or decrease as a result of the mixing process? Give your reasoning and state whether your answer in part (a) is consistent with your answer here.
*79. mmh (a) After 6.00 kg of water at 85.0 °C is mixed in a perfect thermos with 3.00 kg of ice at 0.0 °C, the mixture is allowed to reach equilibrium. When heat is added to or removed from a solid or liquid of mass m and specific heat capacity c, the change in entropy can be shown to be AS = mc In(T;/T;), where T; and T; are the initial and final Kelvin temperatures. Using this expression and the change in entropy for melting, find the change in entropy that occurs. (b) Should the entropy of the universe increase or decrease as a result of the mixing process? Give your reasoning and state whether your answer in part (a) is consistent with your answer here.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:*79. mmh (a) After 6.00 kg of water at 85.0 °C is mixed in a perfect
thermos with 3.00 kg of ice at 0.0 °C, the mixture is allowed to reach
equilibrium. When heat is added to or removed from a solid or liquid
of mass m and specific heat capacity c, the change in entropy can be
shown to be AS = mc In(T;/T;), where T; and T; are the initial and final
Kelvin temperatures. Using this expression and the change in entropy for
melting, find the change in entropy that occurs. (b) Should the entropy of
the universe increase or decrease as a result of the mixing process? Give
your reasoning and state whether your answer in part (a) is consistent
with your answer here.
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