![Scales with 12 grams of pure carbon-12 powder.](http://static.sciencelearn.org.nz/images/images/000/002/296/full/1-mole-of-carbon20161104-17068-1w5ccl7.jpg?1674167950)
Exactly 12 grams of pure carbon-12 powder is known as one mole. The number of atoms of carbon-12 present in this one mole sample is 6.022 136 7 x 1023. This number is known as Avogadro’s number.
Exactly 12 grams of pure carbon-12 powder is known as one mole. The number of atoms of carbon-12 present in this one mole sample is 6.022 136 7 x 1023. This number is known as Avogadro’s number.