occurrence of ammonia

In Free State - Ammonia is present in atmospheric air and in natural water in trace amounts. However in sewage water, it is present in greater proportion. It is also produced by decay of plant and animal tissues. Ammonia is released into the atmosphere by the decomposition of or..

Occurrence - Nitrogen exists in the free and in the combined form in the atmosphere of the earth. In the free state it occupies about 80% by volume of air. In the combined form, it is present as ammonia and all ammonium compounds, in nitric acid and in all nitrates, nitrites and..

Occurrence - Astatine the last member of halogen family is a radioactive element with a very short life. All other halogens are abundant in nature in the combined state. The very high electronegativities of halogens make them very reactive and hence, they are not found in free state. In t..

Generally found in land animals which can afford to excrete sufficient volume of water or to concentrate urea in considerable quantity in the urine. It is commonly found in man, whales, seals, desert mammals like kangaroo rats, camels, toads, frogs, cartilagenous fishes, aquatic and semi aquatic r..

It is a common method seen in birds, land reptiles, insects, land snails and some land crustaceans. Uric acid is formed from ammonia mostly in the liver and to some extent in the kidneys. The process is highly energy dependant, but is much less toxic than both ammonia and urea..

Nitrogen occurs in free state in atmosphere, which contains 78% of nitrogen by volume. It is present in volcanic gases and gases evolved by burning coal. In combined state, nitrogen occurs in animals and plants as proteins, and as nitrates, such as NaNO 3 (chile salt peter), KNO 3h..

Large deposits of this salt occur in Owens lake in California and Lake Magadi in British East Africa. It occurs native as Na 2 CO 3 .NaHCO 3 .H 2 O in Egypt. During hot weather, soda is also collected from a large number of alkaline lak..

In free state, sulphur occurs in the volcanic regions of Sicily, Italy, South America, Japan and Russia. The largest deposits of sulphur have been found in Louisiana and Texas (USA). In combined state, sulphur occurs mainly as the sulphides and sulphates. Sulphides Sulphates Iron pyr..

Alkali and alkaline Earth metals are the most violently active of all the metals. These occur in the combined form with halide, sulphate, carbonate, silicate ions, etc. and are not found in the free state in nature, as these are readily oxidized. A number of alkali and alkaline Earth metals are fo..

Aluminium is the third most abundant element (8.3% by weight) in the earth's crust after oxygen (45.5%) and silicon (25.7%..