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3-28. Initially, one lb-mol of the compound is placed in a piston-cylinder device at T 25F and P = 1 atm. The compound is heated

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3-28. Initially, one lb-mol of the compound is placed in a piston-cylinder device at T 25F and P = 1 atm. The compound is heated at constant pressure. Find the heat (Q) added if the final state is: A. 50% solid and 50% liquid at T = 50F B. Liquid at 125F C. 25% vapor and 75% liquid at T = 150F D. Vapor at 200F

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