How do you convert grams to mole?

1 Answer
Chuck W.
Feb 27, 2014

To convert from grams to moles, you must divide by the molar mass of the substance.

For example, water has a molar mass of 18 g/mol. Therefore, a 25 g sample of water contains

25g18gmol=1.39mol of water molecules.

Note that the unit of grams is written as g, and the unit of moles is written as mol.

Related questions
See all questions in The Mole
Impact of this question
104488 views around the world
You can reuse this answer
Creative Commons License