CH1012
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CHARACTERISATION I
3. Characterisation of Organic Compounds
New (or well known) compound
  e.g. CH2  empirical form.  C6H12  molecular form.
(1) Elemental analysis C% H% N%
(%O by difference)
    - Amount used 1mg   
 Þ Empirical formula (must know how to do)
    - relative number of atoms in a molecule
   
(2) Mass spectrum  [M]+ = molecular weight
    - Amount used 1mg         molecular ion