How does the weight of oxygen compare to the weight of hydrogen?

The weight of oxygen is indeed about 16 times more than that of hydrogen. This comparison is based on the atomic masses of the elements: hydrogen has an atomic mass of approximately 1 atomic mass unit (amu), while oxygen has an atomic mass of about 16 amu.

Since molecular weight is often referenced in terms of atomic mass units and the weight of a substance in grams, this translate directly to the comparison of their weights in a given volume or condition. Therefore, for every atom of hydrogen, the weight of an oxygen atom is 16 times greater, making the relationship clear and consistent with the periodic table of elements. This understanding is fundamental when studying chemical reactions and stoichiometry, where ratios of reactants and products are crucial.