# What is the molar mass of sodium hydroxide?

Sodium hydroxide is $\text{NaOH}$. Thus, its molar mass involves:
• $\text{M"_"Na" = "22.989 g/mol}$
• $\text{M"_"O" = "15.999 g/mol}$
• $\text{M"_"H" = "1.0079 g/mol}$
So, its molar mass is $22.989 + 15.999 + 1.0079 = \textcolor{b l u e}{\text{39.996 g/mol}}$ to 5 sig figs.