# How do you work out moles in a chemistry problem?

Jan 30, 2017

The most common, and so the most useful, equation is Moles = mass/RFM

#### Explanation:

For example;

The moles of Hydrogen in 5 grams is

Mass/RFM$= \frac{5}{1}$
$\textcolor{w h i t e}{\ldots \ldots \ldots \ldots .}$ $= 5$