How many atoms are in 1 mole of a substance?

Answer: The number of atoms in a mole of a substance can be calculated by dividing the atomic mass of atoms by the number of atoms per molecule. 

However, the fact reveals that there are 6.022 x 10²³ atoms in 1 mole of a substance. 

6.022 x 10²³ is also known as Avogadro’s number or Avogadro’s constant.