3
There are 3 atoms in a water molecule (H2O) - 2 hydrogen atoms and 1 oxygen atom.
There are two atoms of hydrogen in one molecule of H2O.
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.
hydrogen oxide is water or H2O and has two hydrogens
the water molecule is H2O so it has 2 atoms of hydrogen in it. (plus an atom of oxygen)
Three: two hydrogen atoms and one oxygen atom. Hence the formula, H2O.