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A block of copper of mass 500 g and initially at 293 k is in thermal contact with an electric heater of resistance 1000 ohms and negligible mass. A current of 1.00 A is passes for 15.0 s. Calculate the change in entropy of the copper, taking C(p,m) = 24.4 J/K /mol. The experiment is then repeated with the copper immersed in a stream of water that maintains its temperature at 293 K. Calculate the change in entropy of the copper and the water in this case.

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Category:- Chemistry
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