What is the molar mass of carbon dioxide $( {\mathrm{CO}}_2)$?

To calculate the molar mass of carbon dioxide $( {\mathrm{CO}}_2)$, we need to add up the atomic masses of all the atoms in the formula.

The atomic masses are:

Carbon (C): 12 g/mol
Oxygen (O): 16 g/mol (there are 2 oxygen atoms in carbon dioxide)

The molar mass of carbon dioxide $( {\mathrm{CO}}_2)$ = $( 12 + 2\times 16) = 44 \mathrm{g}/\mathrm{mol}$