When the gas is in the initial state, the volume is $4\mathrm{.}00$ L$,$ the pressure is $3\mathrm{.}00$ atm, and the temperature is $400$ K$.$ The gas is first warmed at constant volume to a pressure of $4$ times the initial value $($state B$).$ The gas is then allowed to expand isothermally to some new volume $($state C$).$ Finally it is compressed isobarically to its initial state. $($Due to the nature of this problem, do not use rounded intermediate values$$including answers submitted in WebAssign$$in your calculations.$)$