(a) In reaching equilibrium, how much heat transfer occurs from 1.2 kg of water at 40°C when it is placed in contact with 1.2 kg of 20°C water? Specific heat of water c=4186 J/(kg°C) Hint: If the masses of water are equal, what is the equilirium temperature of the water mixture? Q = 50232 (b) What is the change in entropy due to this heat transfer? AS total = J/K (c) How much work is made unavailable, taking the lowest temperature to be 20°C?

(a) In reaching equilibrium, how much heat transfer occurs from 1.2 kg of water at 40°C when it is placed in contact with 1.2 kg of 20°C water? Specific heat of water c=4186 J/(kg°C) Hint: If the masses of water are equal, what is the equilirium temperature of the water mixture? Q = 50232 (b) What is the change in entropy due to this heat transfer? AS total = J/K (c) How much work is made unavailable, taking the lowest temperature to be 20°C?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter4: The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 83CP: (a) infinitesimal amount of heat is added reversibly to a system. By combining the first and second...

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