**Contents**show

## How many moles are in 50 grams of water?

There are 3 moles of O in 50 g.

## How many moles are in 1 ml of water?

One mole of water is about 18 milliliters.

It’s not a large volume, yet it contains 6.022 x 10^{23} water molecules! You can use the same steps to find the mass and volume of any other substance. But, the mass in grams and volume in milliliters are only the same for water and other substances with a density of 1 g/ml.

## How much moles are in water?

The number of atoms is an exact number, the number of mole is an exact number; they do not affect the number of significant figures. The average mass of one mole of H2O is 18.02 grams. This is stated: the molar mass of water is 18.02 g/mol. Notice that the molar mass and the formula mass are numerically the same.