# Question #ee3be

Dec 1, 2015

$n = 27.75 m o l$.

#### Explanation:

We have:
Mass (m) = 500g
Relative Formula Mass of Water (Mr) = 18.02.

We know that, to calculate the amount of moles, we can use the formula:
$n = \frac{m}{M r}$,
where $n$ is the number of moles, $m$ is the mass, and $M r$ is the relative formula mass (or molecular weight). So, we get:
$n = \frac{500}{18.02}$,
$n = 27.75 m o l$.
There are 27.75 moles of water in 0.5 liters of water.

Hope it Helps! :D .