Moles of water = mass of water / molar mass of water
Here's how to break it down:
* Mass of water: This is the weight of the water you're working with, usually expressed in grams (g).
* Molar mass of water: This is the mass of one mole of water molecules. The molar mass of water (H₂O) is approximately 18.015 g/mol. You can calculate this by adding the atomic masses of hydrogen (1.008 g/mol) and oxygen (15.999 g/mol):
* 2(1.008 g/mol) + 15.999 g/mol = 18.015 g/mol
Example:
Let's say you have 36 grams of water. To calculate the moles of water, you would do the following:
* Moles of water = 36 g / 18.015 g/mol = 2 moles
Therefore, 36 grams of water is equal to 2 moles of water.
