Video Summary

A mole is a unit of measurement used in chemistry to represent a very large number of atoms, molecules, or particles. It is equal to 6.022 × 10^23, which is Avogadro's number. The mole is used to simplify the writing of very large numbers. For example, instead of saying that there are 6.022 × 10^23 atoms of carbon in a mole of carbon, we can simply say that there are 1 mole of carbon atoms. Moles can also be used to convert between grams and atoms. The molar mass of an element is the mass of one mole of that element. For example, the molar mass of carbon is 12 grams per mole. This means that 12 grams of carbon contains 1 mole of carbon atoms. Moles are a very useful unit of measurement in chemistry, and they are used to simplify the writing of very large numbers and to convert between grams and atoms.