How many mol of hydrogen present in 16g methane

Answer 1

well, how many moles of CH4 is 16g?

clearly, 4 times that many atoms of H.

But, hydrogen comes as H2, not just H, so divide that by 2.

Answer 2

Actually, the problem isn't stated properly. It should spell out if the answer needed is for mols H atoms or mols H2 molecules