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CHEMISTRY LEVEL 3


1. GAS LAWS
2. THE MOLE: Formulae and Chemical Equations
3. ORGANIC CHEMISTRY 1
4. NITROGEN AND ITS COMPOUNDS
5. SULPHUR AND ITS COMPOUNDS
6. CHLORINE AND ITS COMPOUNDS
7. A guide to chemical tests based on this module
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Nitrogen and its Compounds: Uses of nitrogen



4.0 Nitrogen and its Compounds


4.2.3 Uses of nitrogen


  1. Manufacture of ammonia
  2. Manufacture of nitrogenous fertilizers (calcium ammonium nitrate, urea, e.t.c)
  3. Preservation of biological specimen (in liquid nitrogen) because of its inertness
  4. To achieve temperatures below -196 oC for research purposes
  5. Treatment of skin and wart.