Answers

2014-09-14T11:29:09+05:30
air is a mixture of different gasses.
it is not a compound as a compound is made up of two or more elements.wheras air has compounds and elements 

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2014-09-14T15:27:32+05:30
AIR IS A MIXTURE BECAUSE IT CANNOT BE SEPARATED BY SIMPLE PHYSICAL METHODS,IT DOES NOT HAVE ANY FORMULA AND ITS MASS KEEPS CHANGING.
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