A gas behaving ideally undergoes an adiabatic, reversible process. The following data are known: p1 = kPa, V1=2.7m³, V2=1.9 m³. Over the range of properties considered, the gas may be assumed to have a constant specific heat Cv=10 kJ/kmolK. Use this to compute γ= Cv/Cp = )R+Cv)/Cv where R= 8.314 kJ/kmolK. Determine the change in internal energy ΔU of the gas due to the process, in kJ.