C = Coloration: Moles featuring two to three various shades of brown must be checked out a little bit suspiciously. Moles coloured blue, grey, pink, black or white also may signal feasible melanoma.

A mole of C-twelve by definition weighs accurately 12 g and Avogadro's amount is set by counting the quantity of atoms. It is not mole so easy. Avogadro's amount is the basic frequent that is least precisely decided.