How cool is that?! You may be wondering how chemists came up with a number like 6.02 x 10 23 but there is a reason! Chemists defined a mole as the amount of atoms that are in exactly 12 grams of ...

One mole contains the same number of particles as there are atoms in 12 g of carbon-12. As atoms and molecules are so small, the number of particles in a mole is very large. This number is: ...

1 mol is the amount of substance that contains the same number of particles as there are atoms in 12.0 g of carbon-12.