Air in an insulated piston cylinder is initially at 300K and

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Air in an insulated piston cylinder is initially at 300K and 100 kPa. The air is allowed to expand isentropically until the air’s specific volume reaches 2.0 m3/kg. How much work per mass (kJ/kg) is produced during the expansion? Use the IG model (variable specific heat) to calculate the answer.a) 156.6 kJ/kgb) 61.4 kJ/kgc) 32.3 kJ/kgd) -32.3 kJ/kg

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