Apply combine gas law
So
[tex]\\ \rm\Rrightarrow \dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{P1(0.722)}{296.3}=\dfrac{0.481(2.055)}{353}[/tex]
[tex]\\ \rm\Rrightarrow 0.0024P1=0.0028[/tex]
[tex]\\ \rm\Rrightarrow P_1=1.167atm[/tex]
D