A constant-pressure, piston-cylinder device contains 100 kg R134a at -12C and 200 kPa. If the refrigerant is

Question:

A constant-pressure, piston-cylinder device contains 100 kg R134a at -12°C and 200 kPa. If the refrigerant is heated at constant pressure until the temperature reaches 60°C, determine:
i) The change in volume
ii) The change in total internal energy
iii) The change in total enthalpy