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Air of 0.5 kg mass is compressed in a piston-cylinder device from 300 K, 120 kPa...

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Mechanical Engineering

Air of 0.5 kg mass is compressed in a piston-cylinder devicefrom 300 K, 120 kPa to 500K, 940 kPa. (a) Determine the entropychange in kJ/K using (i) approximate analysis and (ii) exactanalysis. (b) Determine the direction of heat transfer (into thedevice or out of the device).

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