Answer
Please see the work below.
Work Step by Step
(a) We know that
$PV=nRT$
This can be rearranged as:
$V=\frac{nRT}{P}$
We plug in the known values to obtain:
$V=\frac{(2.0)(8.314)(250)}{(1.5)(1.01\times 10^5)}$
$V=0.027m^3$
(b) As $PV=nRT$
This can be rearranged as:
$T=\frac{PV}{nR}$
We plug in the known values to obtain:
$T=\frac{(4.0)(1.01\times 10^5)(\frac{0.027}{2})}{(2.0)(8.314)}$
$T=330K$
