1. 6.022 X 1023 is Avogadros number (Avogadros constant) the number of atoms in a mole.
Its avogadros number
I asked this question wrong. It should be Avogadros Number. Sorry!
atoms in 12 g of c-12
6.02 X 10^(23)
Avogadros number (approximately). The atomic weight of iron is 55.845. Avogadros number , the number of atoms in a mole of an element, or the number of molecules in a mole of a compound is 6.023 X 1023
It is 6.02 (times) 10 to the power of 23
The unit is "per mole", or mol^-1.
It is the number of fundamental particles - atoms or molecules - of a substance in 1 mole of that substance.