Question: A piston/cylinder (Fig P4.114) contains 1 kg of water at 20C with a volume of 0.1 m3. Initially the piston rests on some stops with

A piston/cylinder (Fig P4.114) contains 1 kg of water at 20°C with a volume of 0.1 m3. Initially the piston rests on some stops with the top surface open to the atmosphere, Po and a mass so a water pressure of 400 kPa will lift it. To what temperature should the water be heated to lift the piston? If it is heated to saturated vapor find the final temperature, volume and the work, ₁W₂

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