(Solved): A gas contained in a piston-cylinder assembly undergoes two processes, A and B, between the some en ...

A gas contained in a piston-cylinder assembly undergoes two processes, A and B, between the some end states, 1 and 2 , where $$p_1=1$$ bar, $$V_1=1{\mathrm{m}}^3,U_1=400\mathrm{kJ}$$ and $$p_2=2$$ bar, $$V_2=0.500{\mathrm{m}}^3,U_2=480\mathrm{kJ}$$ Process A: Constant-volume process from state 1 to a pressure of 2 bar, followed by a constant-pressure process to state 2. Process B: Process from 1 to 2 during which the pressure volume relation is $$pV=$$ constant. Kinetic and potential effects can be ignored. For each of the processes $$A$$ and $$B$$, (a) evaluate the work, in $$\mathrm{kJ}$$, and (b) evaluate the heat transfer in kJ.