# How many atoms are there in one mole of carbon monoxide?

$1.2044 \times {10}^{24}$ atoms
The number of atoms in any mole of substance is always $6.022 \times {10}^{23}$ however the mass of one mole will differ between compounds.
$6.022 \times {10}^{23} \times 2 m o l s = 1.2044 \times {10}^{24}$