1. (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= (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? W = unavailable

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1.
(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=
✓ J
(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?
=
W unavailable
✓ J
Transcribed Image Text:1. (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= ✓ J (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? = W unavailable ✓ J
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