# Question #7e213

$7.6 \cdot {10}^{21}$ molecules of $C {O}_{2}$.
The formula of $C {O}_{2}$ shows that for every 2 Oxygen atoms, there will be one $C {O}_{2}$ molecule. To find the number of $C {O}_{2}$ molecules, all you do is divide the number of oxygen atoms in two.
$\frac{1.52 \cdot {10}^{22}}{2} = 7.6 \cdot {10}^{21}$ molecules of $C {O}_{2}$