A mole.
No.
Its avogadros number
I asked this question wrong. It should be Avogadros Number. Sorry!
atoms in 12 g of c-12
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.
There is 1 mole of atoms in 6.022 x 10^23 atoms of any element.
Its avogadros number which is 6.02 X 10^23 g/mol
Avogadro's number represents the number of units of a substance in one mole of the substance. These units may be electrons, atoms, ions, or molecules, depending on the substance.
1 mole has 6,022 140 857 (74).1023 molecules, atoms, ions.