$1$ mole of an ideal gas undergoes an isothermal expansion as energy is added to it as heat $Q$. Graph shows the volume $V$ versus $Q$. The gas temperature is nearly equal to (use $R=8.31 \mathrm{J} {\mathrm{K}}^{-1}$ mole)

Curve in the figure shows an adiabatic compression of an ideal gas from $15 {\mathrm{m}}^3$ to $12 {\mathrm{m}}^3$, followed by an isothermal compression to a final volume of $3.0 {\mathrm{m}}^3$. There are $2.0$ moles of the gas. Total heat supplied to the gas is equal to : $\left(\ell n2=0.693\right)$

A non-conducting container is divided into two chambers that are separated by a valve. The left chamber contains one mole of a monatomic ideal gas. The right chamber is evacuated. At some instant, the valve is opened and the gas rushes freely into the right chamber. Which are of the following statements concerning this process is true?