# What is the mass of one mole of water?

Jan 4, 2016

18 grams

#### Explanation:

The mass of one mole of any atom/molecule is equal to its atomic molecular mass in grams.

The molecular formula of water is ${H}_{2} O$

The atomic mass of $H$ = 1

The atomic mass of $O$ = 16

In a sense, the formula means $H$ + $H$ + $O$

So... 1 + 1 + 16 = 18

Therefore, the mass of one mole of water = 18 Grams