Question: A cylinder with a piston restrained by a linear spring contains 4 lbm of carbon dioxide at 70 lbf/in.2, 750 F. It is cooled to

A cylinder with a piston restrained by a linear spring contains 4 lbm of carbon dioxide at 70 lbf/in.2, 750 F. It is cooled to 75 F, at which point the pressure is 45 lbf/in.2. Calculate the heat transfer for the process.

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