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..

Air is a mixture of various gases. The main gases present in air are nitrogen (78.1% by volume) and oxygen (20.9% by volume). These two gases together form 99% of the air. Besides these two, air contains small amounts of carbon dioxide (0.03 to 0.04%), ..

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 ..

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..

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 ..

Butane with small quantities of ethane and propane. These gases can be liquified under pressure and bottled in cylinders. By itself LPG is odourless. On leakage, it is toxic if inhaled. It also forms an explosive mixture with air. LPG can be hazardous if handled carelessly. A strong smel..

The percentage composition of air changes from place to place and time to time. The percentage of oxygen becomes lesser and lesser as you go higher and higher; hence mountaineers carry oxygen cylinders while climbing. The vapour density of oxygen is 16, while that of ..

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 be represented by a ..

Composition of the air that we breathe in is: Nitrogen - 78%, Oxygen - 21%, Carbon dioxide - .03 - .04%, Hydrogen - traces, noble gases - traces. Thus the air naturally contains more oxygen than carbon dioxide. This oxygen-rich air is taken in by the nostril..

The composition of air that we breathe in is: Nitrogen - 78% Oxygen - 21% Carbon dioxide - 0.03 - 0.04% Hydrogen - traces Noble gases - traces Thus the air naturally contains more oxygen than carbon dioxide. This oxygen-rich air is taken in by the nostrils. ..