Now up to this point, we know how to calculate the energy of 1 photon, and we know the units here would be joules per photon. Now in order to find the energy for a mole of photons, we can use the conversion factor with Avogadro's number.
Now, here, the conversion factor would be 1 mole of photons equals 6.022×1023 photons. So we know that that value represents Avogadro's number. So just remember, when we calculate the joules per photon from our formulas, we can use Avogadro's number to convert it into joules per mole of photons.
Now we know this connection, move on to the next video and let's put it to work.