Le site de vulgarisation scientifique de l’Université de Liège. ULg, Université de Liège
mole

This is an internationally recognized unit which describes the quantity of matter containing 6.02.1023 entities (atoms, molecules). A mole of atoms therefore contains around 6.02.1023 atoms. This number is called the Avogadro constant. It corresponds to the number of atoms in 12 grammes of carbon 12. The mole (symbol mol) is therefore a unit of counting such as a hundred, for example.

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