Question

What is the molar mass of Silver nitrate?

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 Silver nitrate

The formula for Silver nitrate is ${\mathrm{AgNO}}_3$.

Molar mass of ${\mathrm{AgNO}}_3$=$\left(\mathrm{The}\mathrm{atomic}\mathrm{mass}\mathrm{of}\text{Ag+}\mathrm{The}\mathrm{atomic}\mathrm{mass}\mathrm{of}\text{N+}\left(\text{3×}\mathrm{The}\mathrm{atomic}\mathrm{mass}\mathrm{of}\text{O}\right)\right)$

=$\left(107.87{\text{g mol}}^{-1}{\text{+14.0067 g mol}}^{-1}\text{+}\left(\text{3×16.00}\right){\text{g mol}}^{-1}\right)$

=$169.87{\text{g mol}}^{-1}\hspace{0.17em}$

Hence, the molar mass of ${\mathrm{AgNO}}_3$ is $169.87{\text{gmol}}^{-1}\hspace{0.17em}$.