1 mole of a substance contains the Avogadro's number of elementary entities which is 6.02 × 10^23.
Arbitrarily, the carbon -12 atom was chosen by Avogadro as a standard. The mole was then defined as the number of elementary entities such as atoms, ions and molecules that are contained in 12 g of carbon -12. 1 mole of a substance contains the Avogadro's number of elementary entities which is 6.02 × 10^23.
As such, 6.00 g of carbon-12 is assumed to indirectly count one half of the Avogadro's number of carbon-12 atoms.
Learn more about Avogadro's number; https://brainly.com/question/1445383
