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Q: Ammonia at 10oC with a mass of 10 kg is in a piston cylinder arrangement with an initial volume of 1 m3. The piston initially resting on the stops has a mass such that a pressure of 900 kPa will float it. The ammonia is now slowly heated to 50oC. Find the work in the process.
C.V. Ammonia, constant mass.
Process: V = constant unless P = Pfloat