# What is the molar mass of oxygen?

Jan 23, 2016

#### Answer:

Of oxygen $\text{atoms}$, $16.00$ $g \cdot m o l$. Of oxygen $\text{molecules}$, $32.00$ $g \cdot m o {l}^{-} 1$.

#### Explanation:

We know that the oxygen gas we breathe is the diatomic molecule, ${O}_{2}$; in fact most common elemental gases are diatomic (what are the exceptions to this generalization?).