Avogadro

Avogadro’s number is a fundamental constant in chemistry, approximately 6.022 x 10²³. It represents the number of individual particles—such as atoms, molecules, or ions—that are contained in one mole of a substance. This allows chemists to count and relate tiny particles to measurable quantities, bridging the microscopic world with laboratory measurements. For example, one mole of water contains about 6.022 x 10²³ water molecules. Avogadro’s number helps translate between mass, volume, and particle counts, making it essential for understanding chemical reactions and stoichiometry.