0.07 kg of propane is contained in a piston-cylinder assembly at a constant pressure of 2.7 bar. Heat transfers slowly to the propane, and the volume of the propane increases from 0.029 m3 to 0.036 m3. The piston is free floating with negligible weight. Friction between the piston and cylinder is negligible. The propane may be assumed to be an ideal gas and experiences no significant kinetic and potential energy effects. Determine the heat transfer (in kJ) for this process. Data: R = 0.1886 kJ/kg.K, Cv = 1.490 kJ/kg.K (constant)

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