Question

The number of molecules in 1.7 g of NH2 is​

Answer 1

1 g of the ammonia contains (6.022 × 10²³)/17 atoms. ∴ 1.7 g of the ammonia contains (6.022 × 10²³) × 1.7/17 atoms. = 6.022 × 10²² atoms.

Now, 1 atom of the Ammonia contains 7 + 3 electrons = 10 electrons