Answering Exams

A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system________________?

A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system________________?

A. its internal energy (U) decreases and its entropy (S) increases
B. U and S both decreases (Correct)
C. U decreases but S is constant
D. U is constant but S decreases

 

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