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A horizontal piston/cylinder arrangement was placed in a constant-temperature bath. An external force held it in a place against an initial pressure of 10 bar,

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A horizontal piston/cylinder arrangement was placed in a constant-temperature bath. An external force held it in a place against an initial pressure of 10 bar, and initial gas volume was 1.0 m'. The external force suddenly decreased to 5 bar and gas was expanded to 2.0 m. Then it returned to its original state via infinitesimal change. Calculate the changes of Q, W, AU, and AH for each step

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