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A container having a volume of 1 m^3 holds 23 mol of helium gas at 122◦C.
Boltzmann’sconstant is1.38 ×10^−23 J/K. Assuming the helium behaves like an ideal
gas, what is the average kinetic energy per molecule?
Answer in units of J

Jul 2nd, 2015

Thank you for the opportunity to help you with your question!

Avg K.E = (3/2) k T       where k is boltzmann constant

so by substituting we get 8.176 * 10^-21 joules 

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jul 2nd, 2015

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