The molecule that shows two atoms of hydrogen (H) is:
H2SO4 (sulfuric acid).
In this molecule, the "H2" indicates that there are two hydrogen atoms.
For clarification:
- 2H2O has four total hydrogen atoms (2 water molecules).
- 2CH4 has eight total hydrogen atoms (2 methane molecules).
- HO2 has only one hydrogen atom.
Thus, the correct answer is: H2SO4.