Question

If the atomic weight of nitrogen is 14.0, what is the mass of one mole of nitrogen gas, ${\mathrm{N}}_2$?

Answer 1

Calculating the mass of one mole of nitrogen gas:

Given,

Atomic weight of Nitrogen is given as = $14.0\mathrm{g}{\mathrm{mol}}^{-1}$

The mass of one mole of nitrogen gas,(${\mathrm{N}}_2$) which is also known as the molecular weight, will be calculated as;

$$\begin{gathered} =14.0\mathrm{g}{\mathrm{mol}}^{-1}\times 2 \\ =28\mathrm{g}{\mathrm{mol}}^{-1} \end{gathered}$$

Therefore, the mass of one mole of nitrogen gas, (${\mathrm{N}}_2$) is calculated to be $28\mathrm{g}{\mathrm{mol}}^{-1}$