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[" Heat of "20K" cal is supplied to the system and "],[8400J" of external work is done on the system "],[" so that its volume decreases at constant "],[" pressure.The change in internal energy "],[(J=4200J/kcal)],[" 1) "9.24times10^(5)Jquad " 2) "7.56times10^(@)J]

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