3
There are two atoms of hydrogen in one molecule of H2O.
There are 3 atoms in a water molecule (H2O) - 2 hydrogen atoms and 1 oxygen atom.
The chemical formula of water is H2O; the molecule contain 3 atoms.
One molecule of water contains two atoms of Hydrogen and one atom of Oxygen, which is why its formula is H2O.
There is 1 O atom in 1 H2O molecule thus there are 12 O atoms in 12 H2O molecules.
One atom.
There are two hydrogen atoms in one molecule of water (H2O).
The borax decahydrate - Na2B4O7.10 H2O has 20 H atoms in the molecule.
H2OCount two atoms hydrogen in one molecule of water.
the water molecule is H2O so it has 2 atoms of hydrogen in it. (plus an atom of oxygen)
hydrogen oxide is water or H2O and has two hydrogens
Three: two hydrogen atoms and one oxygen atom. Hence the formula, H2O.