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One mole of copper at a uniform temperature of 20°C is placed in thermal contact with...

One mole of copper at a uniform temperature of 20°C is placed in thermal contact with a second mole of copper which, initially, is at a uniform temperature of 150°C. Calculate the temperature of the two-mole system, which is contained in an adiabatic enclosure, when thermal equilibrium is attained. Why is the common uniform temperature not exactly 85°C? How much heat is transferred and how much entropy is produced by the transfer?

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