Illustrated Glossary of Organic Chemistry

Mole (mol): 6.02 x 1023 of an item; usually atoms or molecules.


   

= 6.02 x 1022 Al atoms.


= 6.02 x 1023 molecules H2O.
2.70 g of aluminum (atomic weight = 26.982 g mol-1) contains 0.1 mole (6.02 x 1022) of   
18.0 ml (18.0 g at 4 oC) of water (molar mass = 18.01528 g mol-1)
aluminum atoms.
contains one mole of water molecules, one mole of oxygen atoms,


and two moles of hydrogen atoms.