# Homework Help: Molecular Kinetic Theory

1. Jan 24, 2006

### khizman

Hi got this question with which i need help

For 1.0 mol of helium at a temprature 27deg C calculate:-

i) the total kinetic energy of molecules,
ii) the root mean square speed of the molecules

2. Jan 24, 2006

### dextercioby

HINT:

$$\frac{m\bar{v^{2}}}{2}=\frac{3}{2}kT$$

Daniel.