A mass of 4 kg of some gas in a closed piston-cylinder device goes through a process in which PV1.5 = 9.487. the initial

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A mass of 4 kg of some gas in a closed piston-cylinder device
goes through a process in which PV1.5 = 9.487. the
initial pressure is 300 kPa and an initial volume of 0.1
m3. The final volume after the process is 0.2
m3. For this process, the change in the specific
internal energy u2 - u1 = -4.6
kJ/kg. The changes in kinetic and potential energies are
negligible. Find the heat transfer for this process in kJ.