Question

why it is said that air is a homogeneous mixture of various gases

Answer 1

A mixture is said to be homogeneous if its constituents are uniformly distributed and are not physically distinct. Air is a mixture of different gases, which cannot be seen as physically distinct. Thus, the gases completely mix with each other and so air is a homogeneous mixture.

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Answer 2

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$Question$

Why is it air is a homogeneous mixture of various gases

$Answer$

Air is called a homogeneous mixture because it is not a compound (which has a fixed amount of elements in a definite ratio), but rather it is a mixture composed of about 21% O2, 78% N2, 0.9% Ar, 0.04% CO2 and a smaller percentage of other gases. The important word is about, since the composition of the mixture that we call “air” can vary somewhat

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