Question

The atomic mass of N is 14.01 g/mol, and the atomic mass of H is 1.008 g/mol. What is the molecular mass of NH3?

17.03 g/mol
15.018 g/mol
14.12 g/mol
45.054 g/mol

Answer 1

Option A = 17.03 g/mol

Step-by-step explanation:

Given data:

Atomic mass of nitrogen = 14.01 g/mol

Atomic mass of hydrogen = 1.008 g/mol

Molecular mass of NH₃ = ?

Solution:

Molecular mass of NH₃ = (14.01 g/mol × 1) + (1.008 g/mol × 3)

Molecular mass of NH₃ = 14.01 g/mol + 3.024 g/mol

Molecular mass of NH₃ = 17.03 g/mol

Ammonia consist of hydrogen and nitrogen both are nonmetals that's why ammonia is an covalent compound.