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    From Hot to Cool: The Second Law of Thermodynamics

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    A. Change in Entropy = Delta S = Q/ T = 25/(20+273) = 0.06826 J/K

    B.Change in Entropy = Delta S = Q/ T = -25/500 = -0.05 J/K

    C. Change in Entropy = Delta S = Q/ ...

    $2.19

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