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3-31 A piston-cylinder device contains 0.85kg of refrigerant134a at 10C. The piston that is free to move has a mass of 12kg and a diameter

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3-31 A piston-cylinder device contains 0.85kg of refrigerant134a at 10C. The piston that is free to move has a mass of 12kg and a diameter of 25cm. The local atmospheric pressure is 88kPa. Now, heat is transferred to refrigerant-134a until the temperature is 15C. Determine (a) the final pressure, (b) the change in the volume of the cylinder, and (c) the change in the enthalpy of the refrigerant-134a

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