Consider a well-insulated horizontal rigid cylinder that is divided into two compartments...

Consider a well-insulated horizontal rigid cylinder that is divided into two compartments by a piston that is free to move but does not allow either gas to leak into the other side. Initially, one side of the piston contains 1 m3 of N2 gas at 500 kPa and 120°C while the other side contains 1 m3 of He gas at 500 kPa and 40°C. Now thermal equilibrium ‘is established in the cylinder as a result of heat transfer through ‘ the piston. Using constant specific heats at room tempera-f hire, determine the final equilibrium temperature in the cylinder. What would your answer be if the piston were not free to move?