© Copyright, Department of Physics, University of Illinois at Urbana-Champaign

Mixed Molecules

A box contains 10000 gas molecules, 2500 of nitrogen and 7500 of argon in thermal equilibrium. The molecular weight of N2 is 28 g/mol, and of Ar is 40 g/mol. The total kinetic energy of the collection of 10000 molecules is 5 x 10-17 J.

What is the temperature of this gas?

T = K