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?