Question

How many molecules are there in 1.00g of NH2

Answer 1

M(NH₂) = 16.02 g/mol

n=m/M

n(NH₂) = 1 g / 16.02 (g/mol) = 0.0624 mol

One mole of NH₂ molecules contains 6.02×10²³ NH₂ molecules.

Number of molecules = n×6.02×10²³ = 0.0624×6.02×10²³ = 0.375×10²³ molecules.

Answer: 3.75×10²² molecules