Example 10.2 Gas constant of the gas is 0.461000 kJ/kg K Molecular weight the gas is 18.034707 kg/kg mol The heat transfer at constant volume is 286.330000 kJ Work done is 0 kJ The change in internal energy is 286.330000 kJ The change in enthalpy is 373.920000 kJ The change in entropy is 0.885987 kJ/k