WAEC - Chemistry (2013 - No. 25)

Which of the following gases are arranged in increasing order of diffusion rate? [H = 1 .0; C = 12; N = 14; O = 16; S = 32]
SO 2 O2, NH3 H2
H2S,NH2,O2,SO2
CO2,N2O,O2,SO2
NH3,NO2,N2,CO2

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