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if you have a cylinder with helium and argon in it, and the mixture is at equilibrium, with a temperature of 150 degrees celsius. what is the average kinetic energy of each gas molecule?, and what is the rms speed of each type of molecule?

im aware of the theory behind this, but it seems that i just cannot obtain the answer.

im using the formula

1/2mv^2 (kinetic energy) = 3/2kT

i think im going wrong with calculating k, isnt that a constant, 1.38 X 10 ^ -23.

thanx for any help

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# Homework Help: Gas Molecule

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