mole

3 ENTRIES FOUND:

mole

Standard unit for measuring everyday quantities of such minute entities as atoms or molecules. For any substance, the number of atoms or molecules in a mole is Avogadro's number (6.02 1023) of particles. Defined exactly, it is the amount of pure substance containing the same number of chemical units that there are in exactly 12 g of carbon-12. For each substance, a mole is its atomic weight, molecular weight, or formula weight in grams. The number of moles of a solute in a litre of solution is its molarity (M); the number of moles of solute in 1,000 g of solvent is its molality (m). The two measures differ slightly and have different uses. See also stoichiometry.

Variants of MOLE

mole or mol

This entry comes from Encyclopædia Britannica Concise.
For the full entry on mole, visit Britannica.com.

Seen & Heard

What made you look up mole? Please tell us what you were reading, watching or discussing that led you here.