Consider the closed look $1->2->3->4->1.$ This is a cyclic process in which the initial and final states are the same. Use vales p$0=5\mathrm{.}0$ atm and V$0=5\mathrm{.}0$ L$.$ Find the total work done by the system in this process, and show that it is equal to the area enclosed by the loop. Express your answer jn joules