A perfect gas (0.1 mol) having C̄_v=1.50 R (independent of temperature) undergoes the above transformation from point 1 to point 4. If each step is…

A perfect gas ($\displaystyle 0.1$ mol) having $\displaystyle \overline{\mathrm{C}}_v=1.50 \mathrm{R}$ (independent of temperature) undergoes the above transformation from point $\displaystyle 1$ to point $\displaystyle 4$ . If each step is reversible, the total work done ( w ) while going from point $\displaystyle 1$ to point $\displaystyle 4$ is (-) $\displaystyle \_\_\_\_$ J (nearest integer) [Given: $\displaystyle \mathrm{R}=0.082 \mathrm{~L} \mathrm{~atm} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$ ]