What is Avogadro's number?

Avogadro's number is defined as the number of atoms, molecules, or particles in one mole of a substance. It is a fundamental constant in chemistry that facilitates the conversion between the mass of a substance and the number of constituents it contains. The value of Avogadro's number is 6.022 x 10²³ particles per mole.

This number is crucial for stoichiometric calculations, allowing chemists to determine how many molecules are involved in chemical reactions from the amounts of reactants or products used. Recognizing that this value represents the number of entities in one mole helps in understanding concepts such as molar mass and concentrations in solutions.

The other values provided in the options do not correspond to the accepted definition of Avogadro's number and are thus not accurate for use in calculations involving the mole concept in chemistry.