Answer
$P=1.69 atm$
Work Step by Step
We know that
$PV=nRT$...........eq(1)
But we also know that
$n=\frac{m}{M}$ Where $m$ and $M$ are given mass and molar mass respectively
Thus eq(1) becomes
$PV=\frac{mRT}{M}$
This can be rearranged as
$P=\frac{mRT}{VM}$
We plug in the known values to obtain:
$P=\frac{32.7\times 0.08206\times 302}{15.0\times 31.9988}=1.69 atm$
