Fox was uncharacteristically quiet as he drove, and if it werenât for his occasional turning of the steering wheel, I would have thought someone had crafted a wax-statue of him and stuck it next to me. âThanks for driving me,â I finally said, just to say something.
Everything is made of atoms. An atom is the smallest particle of an element, like oxygen or hydrogen. Atoms join together to form molecules. A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom. That's why water is sometimes referred to as H2O. A single drop of water contains billions of water molecules.
2 Hydrogen atoms and 1 Oxygen atom make up 1 water molecule. Since there is 1 atomic mass unit in 1 atom of H, and 16 a.m.u. in 1 atom of O, so. amount of H in water molecule is 2 X 1 = 2 a.m.u. amount of O in water molecule is 16 a.m.u. % of H = 2/18 X 100 = 11.11 approx.