How do you calculate the total number of atoms in one mole of a certain formula?
To determine the number of atoms in a mole, you use Avogadro’s number, which is something like 6 times 10 to the 23d power. This is the number of molecules in a mole. To determine the number of moles of caffeine, you’d divide 50 g by the molecular weight of caffeine. Let’s pretend the molecular weight of caffeine is 300. One mole of caffeine would be 300 g. You’d divide 50 by 300 and say, hmm, that’s about a sixth of a mole.
