consider a sealed container with a volume of 2 m3 filled with 3e 23 helium atoms and 6e 23 molecules of nitrogen. recall that helium is a monatomic gas, nitrogen is a diatomic gas. the atomic mass of he is 4 g/mol and of n2 is 28 g/mol. the temperature of the gas mixture is unknown, but high enough that for diatomic molecules the translational and rotational motion is described by equipartition. calculate the ratio of the r.m.s. velocity of the helium atoms to the r.m.s. velocity of the nitrogen molecules.