Question: Find an expression for the change in entropy when two blocks of the same substance and of equal mass, one at the temperature Th and

Find an expression for the change in entropy when two blocks of the same substance and of equal mass, one at the temperature Th and the other at T"
are brought into thermal contact and allowed to reach equilibrium.
Evaluate the change for two blocks of copper, each of mass 500 g, with Cp, m = 24.4 IK-I mol-1, taking Th = 500 K and T, = 250 K,

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