# 1 mole of CH_4 contains how many molecules?

The beauty of a $\text{mol}$ is that $\text{1 mol}$ of anything is the same number of that thing.
It doesn't matter what you have. You could have $\text{1 mol}$ of dingleberries and you would have $6.022 \times {10}^{23}$ of those dingleberries.
So I think you can now tell that there are $6.022 \times {10}^{23}$ molecules of ${\text{CH}}_{4}$ (methane) in $\text{1 mol}$ of ${\text{CH}}_{4}$.