Final answer:
To determine the mass of hydrogen that contains 5.08 x 10¹⁵ H atoms, approximately 16.88 grams of H.
Step-by-step explanation:
To determine the mass of hydrogen that contains 5.08 x 10¹⁵ H atoms, we need to use the molar mass of H2 as a conversion factor from number of atoms to mass. The molar mass of H2 is 2.0158 grams/mol. We can set up the following dimensional analysis:
5.08 x 10¹⁵ H atoms x (1 mol/6.022 x 10²³ H2 molecules) x (2.0158 grams/1 mol H2) = approximately 16.88 grams of H.