Question

Nitrogen gas is a diatomic molecule. what is the mass of one mole of nitrogen gas?

Answer 1

Atomic mass of N from periodic table is 14 amu so atomic mass of N₂ will be 2 * 14 = 28 amu 

This means that every mole of N₂ has mass equal to 28 g 

Answer 2

Answer: The mass of one mole of nitrogen gas is 28 g/mol

Explanation:

Molar mass is defined as the sum of the mass of all the atoms each multiplied its atomic masses that are present in the molecular formula of a compound. It is the mass of 1 mole of a compound or element. It is expressed in g/mol.

The chemical formula of nitrogen gas is $N_2$

We know that:

Molar mass of nitrogen element = 14 g/mol

So, molar mass of nitrogen gas = $(2\times 14)=28g/mol$

Hence, the mass of one mole of nitrogen gas is 28 g/mol