Moles

A mole in chemistry is a unit used to count very small particles like atoms, molecules, or ions. One mole equals approximately 6.022 x 10²³ particles, a number called Avogadro's number. This standard helps chemists relate the mass of a substance to the number of particles it contains. For example, one mole of water weighs about 18 grams because it contains roughly 6.022 x 10²³ water molecules. Using moles simplifies calculations involving large quantities of tiny particles, making it easier to understand and work with chemical reactions.