This is also known as the molar mass of sodium.
Here's why:
* Molar mass is the mass of one mole of a substance.
* One mole contains Avogadro's number of particles (6.022 x 10^23).
* The atomic mass of sodium is 22.99 amu (atomic mass units).
* amu is a very small unit of mass, so we use grams per mole (g/mol) for convenience when working with larger quantities.
Therefore, the mass of one mole of sodium atoms is equivalent to the atomic mass of sodium expressed in grams per mole.
