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
43
The number 10 signify completeness