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3 kg of air at 500 kPa, 90 C expands adiabatically in a closed system until its volume is doubled and its temperature becomes equal

3 kg of air at 500 kPa, 90 ºC expands adiabatically in a closed system until its volume is doubled and its temperature becomes equal to that of the surroundings at 100 kPa and   10 ºC. Find maximum work, change in availability and the irreversibility

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