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23 September, 00:22

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/Ke. Ssystem = 40 J/Kf. Ssystem < 40 J/K

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  1. 23 September, 00:43
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    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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