The mass of 5 molecules of a substance is 3.65 × 10-22 g. What is the possible formula of the substance? [Avogadro's constant, L=6.02×1023 mol−1L = 6.02 \times 10^{23}\text{ mol}^{-1}L=6.02×1023 mol−1]
CH4\text{CH}_4CH4
N2\text{N}_2N2
CO2\text{CO}_2CO2
SO2\text{SO}_2SO2
