(adsbygoogle = window.adsbygoogle || []).push({}); A gas contains a mixture of He and Ne.

The gas is at a temperature of 448 K, with

0.85 mole of He and 2 mole of Ne.

Avogadro’s number is 6.02 × 1023 mol−1,

and Boltzmann’s constant is 1.38×10−23 J/K.

What is the average kinetic energy per

molecule of He? Answer in units of J.

2. KE(bar) = (1/2)mv² = (3/2)kT

3. The middle equation above gives you the average kinetic energy, but I dont have any velocity. Can someone please guide me with this problem?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Average kinetic energy

**Physics Forums | Science Articles, Homework Help, Discussion**