Answer
$191K$
Work Step by Step
We can find the required temperature as follows:
$v_{rms}=\sqrt{\frac{3RT}{M}}$
This simplifies to:
$T=\frac{Mv_{rms}^2}{3R}$
We plug in the known values to obtain:
$T=\frac{(329)^2}{3\times 8.314\times 1000}$
$T=191K$
