A piston-cylinder device contains 0.8 kg of an ideal gas. The gas is cooled at constant pressure until its temperature decreases by 10C. During the cooling process, 16.6 kJ of work occurs. The specific heat ratio of the gas is 1.667.
(a) What is the molecular weight (kg/kmol) of the ideal gas?
(b) Calculate change in internal energy (kJ) of the ideal gas.
(c) Find change in enthalpy (kJ) of the ideal gas.