A certain ideal gas has molar heat capacity at constant volume C_V . A sample of this gas initially occupies a volume V₀ at pressure p₀ and absolute temperature T₀ . The gas expands isobarically to a volume 2V₀ and then expands further adiabatically to a final volume 4V₀.

(a) Draw a pV-diagram for this sequence of processes.

(b) Compute the total work done by the gas for this sequence of processes.

(c) Find the final temperature of the gas.

(d) Find the absolute value of the total heat flow |Q| into or out of the gas for this sequence of processes, and state the direction of heat flow.