Which weighs more, 0.50 mole oxygen atoms or 4 mole of hydrogen atoms?

0.5 moles of oxygen weighs more than that of the 4 moles of hydrogen.

Explanation:

Atomic mas of oxygen = 16.0 g/mol

mass of 0.50 moles of oxygen atom =

Atomic mas of hydrogen = 1.0 g/mol

Mass of 4 moles of hydrogen atom =

0.5 moles of oxygen weighs more than that of the 4 moles of hydrogen.

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.