Download moles A mole is the number of atoms of an element (or molecules of

moles
A mole is the number of atoms of an element (or molecules of a
compound) that you find in the same mass in grams of an element (or
compound) equal to its atomic (or molecular) mass.
Its value - the number of particles - is 6.02 x 10^23, also called 602
sextillion (OK, ok... officially, it’s 602,214,085,774,000,000,000,000)
So if you have 1 gram of Hydrogen that has molecular mass 1, you have
602 sextillion atoms of hydrogen.
If you have 12 grams of Carbon, atomic mass 12, you have 602 sextillion
carbon atoms. That’s about as much as four wafers from Oreo Thins.
If you have 58 grams of NaCl, molecular mass 58, you have 602 sextillion
molecules of salt. That’s about a handful of salt.
If you have 197 grams of gold, atomic mass 197, you have 602 sextillion
molecules of gold. And at $40 per gram, that would be $7,880 worth of
gold.
You need this in case you want to get elements combined in the right
ratios. For methane, you need 4 atoms of hydrogen for every atom of
carbon, so if you have 4 moles of hydrogen and 1 mole of carbon you have
2412 sextillion atoms of hydrogen and 602 sextillion atoms of carbon making the 4:1 ratio you need.
6.02 x 10^23 is known as Avogadro’s number, honoring Amodeo
Avogadro, a very good pioneering chemist.