Question

Which is heaviest :
(A) 25 g of Hg
(B) 2 mole of H,0
(C) 2 mole of CO, (D) 4 g-atom of
[2020112299​

Answer 1

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 .