explain mole conversion to me plz

Question

anonymous · Answer

1 mole = 6.02 x 10^23 MOLEcules. It can also be used to find the mass of a substance. If you had 1 mole of oxygen, you'd have 16 grams of oxygen because on the periodic table, the atomic mass of oxygen is 16. It can also be used as a ratio from one substance in a reaction to another. for example, we can use this formula to make water.
OH + H->H2O
In this case, when there are no numbers before the substances, the amount of moles that are reacting is 1. 
1OH + 1H -> 1H2O
The ratios are always fixed. Always. They never change, regardless of the masses.