Two blocks with different temperatures had entropies of 10 j/k and 30 j/k before they were brought in contact. what can you say about the entropy of the combined system after the two came in contact with each other? a. ssystem > 40 j/kb. ssystem = 20 j/k c. ssystem < 20 j/kd. ssystem > 20 j/ke. ssystem = 40 j/kf. ssystem < 40 j/k

a. Ssystem  > 40 J/K

Explanation:

Given that

The entropy of first block = 10 J/K

The entropy of second block = 30 J/K

When two bodies come into contact with each other, the entropy of the combined system will increase and the entropy sum remains unchanged: According to the Second law of thermodynamics.The entropy of the system will be greater than 40  J/K.

Therefore the answer is a.

Ssystem  > 40 J/K

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