Please explain this questions Share with your friends Share 0 Aditi Gupta answered this Dear student, Rate of diffusion ∝ Molar massThe species that have the same molecular mass will diffuse at the same rate.Molar mass of the given species are as follows- NH3 = 17 uH2 = 2uCO = 28 uSO2 = 64 u N2 = 28 uBoth CO and N2 have the same molar mass. So, they diffuse at the same speed.Hence, the correct option is (C). Regards 1 View Full Answer