5.1 Moles and Molar Mass

Moles

The mole is a vital quantity in chemistry, specifically in stoichiometry. Stoichiometry is the study of relationships between the quantities of substances in chemical reactions—essentially, it is used to calculate how much of some substance exists in a particular scenario. Put simply, a mole is a quantity in the same way a dozen is, only it relies on a different number. While a dozen of something indicates 12, one mole of particles is equal to ${6.022*10^{23}}$ particles. If asked to find the number of atoms in a certain amount of moles, simply multiply by avogadro’s number.