Two.
The hydrogen molecule contains 4 Hydrogen atoms, and one Carbon in the centre.
The chemical formula of water is H2O; water contain two hydrogen atoms.
A water molecule (H2O) contain two hydrogen atoms.
There are two atoms of Hydrogen in the molecule.
There are 3 atoms in a water molecule (H2O) - 2 hydrogen atoms and 1 oxygen atom.
As 1 molecule of H3PO4 contains 3 hydrogen atoms, 4.56x1023 contain 3x(4.56x1023) hydrogen atoms.
A molecule consists of many atoms. When you have a hydrogen molecule, or whatever other type of molecule for that matter, you have many hydrogen atoms that make it.
HCl is a molecule which is made of two atoms - hydrogen and chlorine.
There are four hydrogen atoms in an ethanal molecule, CH3CHO.
ten as each hydrogen molecules contains two atoms.
There are 12 atoms of hydrogen in a particle of glucose
There are two atoms of hydrogen in a molecule of H2O2.