elemental composition of air

Composition of Air - For thousands of years, air was considered to be a mixture of many gases. The true composition of air was not known for a long time. Air is a mixture of various gases. The main gases present in air are nitrog..

. This zone is called troposphere. Therefore, at higher altitudes, some of us find it difficult to breathe. Above the troposphere is the stratosphere. This zone is rich in ozone. Hence, it is also called ozonosphere. In ozonosphere, the sunlight converts oxygen to ozone by photochemical dissolution..

Air around earth is not uniform throughout the atmosphere. The density of air is gradually reduced with altitude. Although atmosphere is spread to 200 km around earth, the oxygen content beyond 5 km above surface of earth hardly supports any life. The composition of h..

Gas Relative % by Volume Nitrogen (N 2 ) 78.09 Oxygen (O 2 ) 20.93 Argon (A) 00.93 Carbon di oxide (CO 2 ) 0.032 Miscellaneous 0.02 Total 100.000 ..

In earlier times Air was considered as an Element but it was found out to be a mixture. The following are the reasons for considering air as mixture and not an element or a compound. a) Air has a variable composition and hence it cannot ..

Air Pollution - The major problem that the atmosphere is being subjected to is pollution. In India, about 100 million tons of pollutants are being added to the atmosphere annually. This figure is likely to go up in future. Polluted air is harmful to man and the biosphere on the ..

Dry air has no effect on magnesium and calcium. In moist air, a thin layer of oxide gets formed on its surface. When heated in air, they burn with a dazzling light giving its oxide and nitride. ..

The vapors of carbon disulphide are highly inflammable and catch fire when heated in air, forming carbon dioxide and sulphur dioxide...

Percentage composition is the percentage by mass of the atoms of an element present in one mole of a compoun..

Percentage composition is the percentage by mass of the atoms of an element present in one mole of a compound. ..