Question

which has more number of atom.100g of N2 and 100g of NH3.

Answer 1

I think 100 g of NH3 has more atom

Answer 2

Molar mass of N₂ = 2 x 14.0067 = 28 moles. No. of atoms in NH₃ = (1 + 3) = 4 x 100/17 x 6.022 x 10²³ = 141.69 x 10²³ atoms. Conclusion: ∴100g of NH3 has more atoms than 100g of N2 .
I hope it help you.....