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Q.28 A mass of 0.8 kg of air at 1 bar and 25C is contained in a gas tight frictionless piston cylinder device. The

Q.28 A mass of 0.8 kg of air at 1 bar and 25C is contained in a gas tight frictionless piston cylinder device. The air is now compressed to a final pressure of 5 bar. During the process, the heat is transferred from air such that the temperature inside the cylinder remains constant. Then the work done during the process is kJ.

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