Question

According to the kinetic theory of gas, what is the speed of gas molecules at absolute zero temperature ?

Answer 1

According to the kinetic theory of gas, the root mean square speed of gas molecules is
$v_{rms}^2=\frac{3RT}{M}$
At absolute zero temperature i.e., $T=0$
$v_{rms}^2=0$ or $v_{rms}=0$