One mole of anything contains 6.022 x 10²³ of them.
-- One mole of nails contains 6.022 x 10²³ nails.
-- One mole of electrons contains 6.022 x 10²³ electrons.
-- One mole of dogs contains 6.022 x 10²³ dogs.
One mole of Hydrogen (or ANY element) contains
602,200,000,000,000,000,000,000 atoms of it. (rounded)