Crazy scientist who came up with "Avogadro's Constant", a number that clumps a specific number of atoms into a mole, which can be used to figure out the exact weight of an atom of any element. On the periodic table, the element's atomic mass is in grams per mole. There are 6.02 X 10^23 atoms in one mole.
"Crap man, thats some serious scientific crap!"
60 200 000 000 000 000 000 000 atoms, ions, or molecules make a mol. A mol, depending on the element or compound can occupy anywhere from 0.1 to 20 square meters in volume, and can weigh between 0.001 to 0.200 killograms.
BTW, if you have found this definition intentionaly you should find a hobby or job of some sort and get help now.
Q: If one combusts 1.204 e24 molecules of propane gas, using the avogadro constant, determain how many molecules of water vapor will result.
A: 4.816 e24