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Air is a homogeneous mixture because you can't distinguish between the substances and also because the chemical composition is practically unchanged in the atmosphere near the Earth (excepting of course many local minor variations).

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11y ago

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Is pure air a homogenous or heterogenous mixture?

Yes. Pure air is a homogenous mixture. Air is a mixture of various kinds of gases. A mixture is said to be homogenous when all its constituents are in phase. Example, a mixture of water & milk is a homogenous mixture, as water & milk both are liquids & are in phase. Same is the case with pure air. All the constituents gases of pure air are in phase with each other. Hence its a homogenous mixture.


How can you justify that air is a homogenous mixture. Identigy substances present in it?

Air consists of a mixture of gases, mainly nitrogen (about 78%), oxygen (about 21%), and small amounts of other gases such as carbon dioxide, argon, and water vapor. Despite its composition, air does not separate into distinct layers based on the gases it contains, making it a homogenous mixture.


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