The empirical formula of a compound containing 40.0% C, 6.71% H, and 53.29% O is .
Which of the following contains the same number of atoms as 4.032 g of Hydrogen atoms?
1 mole of H2
6.022 x 10^23 atoms of H
6.022 x 10^23 molecules of H2
(2) (6.022 x 10^23) molecules of H2
