This page explains the mole as a key unit in the International System of Units, defined as containing \(6.022 \times 10^{23}\) elementary entities. It highlights its importance in chemistry for quanti...This page explains the mole as a key unit in the International System of Units, defined as containing \(6.022 \times 10^{23}\) elementary entities. It highlights its importance in chemistry for quantifying substances and conversions between moles, mass, particles, and gas volume.