What is Avogadro's number?

Avogadro's number, which is 6.022 x 10^23, is a fundamental constant in chemistry that represents the number of atoms, molecules, or particles in one mole of a substance. This value allows chemists to convert between the atomic scale and everyday quantities, enabling calculations involving the amount of substance present in a given sample.

The significance of Avogadro's number lies in its role as a bridge between the microscopic world of atoms and the macroscopic world of material quantities. For example, when determining how many molecules are in a certain mass of a compound, Avogadro's number is key to performing those calculations accurately.

In the context of the options provided, other numbers do not correspond to Avogadro's constant. The other figures represent different physical constants or quantities, but they do not reflect the standard definition of a mole as represented by Avogadro's number. Understanding this concept is crucial for mastering stoichiometry and reactions in chemistry.