Sanitary Engineering Principles
(1) Atomic Weight: weight of an atom of an element relative to the atomic mass
unit (a.m.u.) of Carbon (C), which is 12.0. a.m.u.
(2) Gram Molecular Weight: molecular weight of a compound expressed
A mole contains Avogadros number of elementary particles (i.e., 6.02 x 1023).
The elementary particles may be atoms, molecules, ions, or electrons.
A 1 molar (M) solution contains 1 gram molecular weight (GMW) of a substa