# Question #ea2ce

Mar 30, 2017

D => 0.055 moles

#### Explanation:

The molecular weight of ${O}_{2}$ can be calculated by adding up the masses in the compound.

$2 \cdot 16.00 u$ (mass O-atom) =32.00 g/mol

Now to get the number of moles out of the mass given, you only have to divide the grams by the molecular weight!

$\frac{1.75}{32.00}$ =0,0546875 moles