# How many grams are there in 5.0 moles of #H_2O#?

##### 2 Answers

Jan 26, 2017

#### Explanation:

We first determine the molar mass of

Multiply by the number of mols:

(we have to round to two significant digits).

Jan 27, 2017

The formula for calculating moles =

Therefore =

#### Explanation:

molar mass of water = 18g/mol

moles of water = 5

Therefore there are 90 grams of water