Question

What is the molar mass of phosphorus?

Answer 1

Step1. Molar mass

The mass of $1$ mole of a substance is called its molar mass.

Step2. Formula for molar mass

Molar mass =$\text{The atomic mass of element × number of atoms given in subscript}$

Step3. Molar mass of phosphorus

The symbol for Phosphorus is $\mathrm{P}$.

Molar mass of phosphorus=$\mathrm{The}\mathrm{atomic}\mathrm{mass}\mathrm{of}\text{phosphorus×1}$

=$30.97{\text{gmol}}^{-1}\hspace{0.17em}\times 1$

=$30.97{\text{gmol}}^{-1}\hspace{0.17em}$

Hence, the molar mass of phosphorus is .$30.97{\text{gmol}}^{-1}$.