Helium atoms have a mass of 4u and oxygen molecules have a mass of 32u, which is defined as an atomic mass unit (u=1.660540*10^-27 kg). Compare a gas of helium atoms to a gas of oxygen molecules. At what gas temperature would the average translational kinetic energy of a helium atom be equal to that of an oxygen molecule in a gas of temperature 300 K? At what gas temperature would the root-mean-square (RMS) speed of a helium atom be equal to that of an oxygen molecule in gas at 300 K?

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