How many atoms of hydrogen would four molecules of water H2O have?

Each water molecule (H2O) contains 2 atoms of hydrogen. Therefore, four molecules of water would contain 4 x 2 = <<4*2=8>>8 atoms of hydrogen.

Each water molecule, H2O, consists of two hydrogen atoms. Therefore, four molecules of water would contain a total of 4 x 2 = 8 hydrogen atoms.

To determine the number of atoms of hydrogen in four molecules of water (H2O), you need to consider the chemical formula of water and use multiplication to calculate the total number of hydrogen atoms.

In one molecule of water (H2O), there are two atoms of hydrogen (H) and one atom of oxygen (O). Since there are four water molecules, you multiply the number of atoms in one molecule by four.

Number of hydrogen atoms = 2 (hydrogen atoms per molecule) * 4 (number of water molecules)
= 8

Therefore, four molecules of water (H2O) would have a total of 8 atoms of hydrogen.