molecular 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%), ..

Close the end of the tube at B. Keep your mouth at C, and suck in a breath of air. The air from the atmosphere enters through A, passes through the limewater, and comes into your mo..

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 ..

Molecular Formula of a substance gives the names and number of atoms of the various elements present and the molecular mass of it. To find the molecular formula from percentage composition we have to undertake the following steps: 1) First find the empirical ..

Air is an important natural resource providing the basis of life on earth. Entire biosphere depends on air. Air in the atmosphere provides oxygen to plants and animals, by virtue of which they are able to live. The composition of air (78% N, 21% O, ..

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 whole, as well. This probl..

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

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..

Empirical and molecular formulae of a compound can be determined from the composition of the compound, which is expressed in terms of the percentage of each element present in it. To determine the formula of an unknown compound the following steps are taken: Empirical and ..