In a Gas Mixture Containing Oxygen, Neon, and Argon, the Mole

Short Answer

In a gas mixture containing oxygen, neon, and argon, the mole fractions are: If this mixture behaves as an ideal gas, what is the density of this mixture, in g/liter, at 37.0 °C and 765 torr? If someone gave a sample of the mix described above to a student and had them determine the molar mass of the "gas"without telling the student it was a mixture, what value should the student report?