| http://www.w3.org/ns/prov#value | - Allotropes of carbon including fullerene, preparation, properties and uses of CO and CO2,poisoning by CO.Nitrogen: Nitrogen cycle, preparation, properties and uses of nitrogen, preparation, properties and uses of ammonia, principle of manufacture of ammonia by Haber process, structure of ammonia, principle of manufacture of nitric acid by Ostwald process, properties and structure of and uses of n
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