$(1)$ \[ \begin{align} p_2 &= \frac{p_1 V_1}{V_2} \\ &=\frac{1 \times 10^6 \times 0.6}{12} \\ &=50000 \ \rm{Pa} \end{align} \] $(2)$ \[ \begin{align} T &= \frac{p_1 V_1}{mR} \\ &= \frac{1 \times 10^6 \times 0.6}{4 \times 0.287 \times 10^3} \\ &=522.648 \\ &=522.6 \ \rm{K} \end{align} \] $(3)$ \[ \begin{align} W_{12} &= p_1 V_1\ln \frac{V_2}{V_1} \\ &=1 \times 10^6 \times 0.6 \ln \times \frac{12}{0.6}\\ &= 1.797 \ \rm{MJ} \end{align} \] $(4)$ \[ Q_{12} = W_{12} = 1.797 \ \rm{MJ} \]