Q
A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system________________?
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A
A. Its internal energy (u) decreases and its entropy (s) increases
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B
B. U and s both decreases
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C
C. U decreases but s is constant
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D
D. U is constant but s decreases
Correct Answer:
B. B. U and s both decreases
