The given mass of an element can be found using Avogadro’s number, which equals 6.02214076 × 1023 mol-1 and gives you one mole of anything.
1. You determine the molar mass of the element.
2. Then, you divide the given mass by the molar mass and get the moles.
3. Finally, in order to calculate the number of atoms, you should multiply the element’s moles by Avogadro’s constant.