Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol

=2.016 g/ mol

Explanation:

1 atom of hydrogen has an atomic mass of 1.008 g. Hydrogen molecule is made up of two atoms of hydrogen therefore, it has a mass of:

1.008 g × 2=2.016 g

1 mole of hydrogen gas contains the Avogadro's number of molecules.

Thus M =(L × 2.016g) =2.016g/mol

it means there are 3 atoms of oxygen

it would be d. henry moseley

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