# How can you determine if the molecular formula of a compound is the same as its empirical formula?

As you know the $\text{empirical formula}$ is the simplest whole number ratio that defines constituent atoms in a species. The $\text{molecular formula}$ is a whole number ratio of the $\text{empirical formula}$, and of course, the ration MIGHT be one, i.e.:
$\text{molecular formula}$ $\equiv$ $n \times \text{(empirical formula)}$.