If air is 78% nitrogen and about 21% oxygen, with the remaining 1% a mixture of various trace gases, then what is it? Can you please explain why it is a compound or homogeneous mixture or heterogeneous mixture.
2007-09-22 05:32:50 · 5 answers · asked by fred 1 in Science & Mathematics ➔ Chemistry
It is strictly speaking a heterogeneous mixture as water vapour and dust particles are also part of it.
2007-09-22 05:56:51 · answer #1 · answered by ag_iitkgp 7 · 3⤊ 2⤋
Heterogenous Mixture
2016-12-16 10:04:49 · answer #2 · answered by ? 4 · 0⤊ 0⤋
A compound is formed by chemical reaction, exAMPLE LIFE SUSTAINING WATER, formed by reaction bet ween hydrogen and oxygen. A mixture is not formed by any chemical reaction between elements. example is a junk yard where you find a lot of things piled up in a hapazard manner. you can easily remove any thing from mixture, like removing a tyre fom junk yard. Incidently a junk yard is a hetrogeneous mixture, that is every heap doesnot have same ratio of things. A homogeneous mixture is having constituents in any random fixed ratio, at any selecte random sample, like a sugar syrup in a bottle, where the ratio of sugar is same and taste is also same. so atmospheric air is a homogeneous mixture at a given location
2007-09-22 05:46:50 · answer #3 · answered by K R 2 · 0⤊ 0⤋
Air is a solution of gases, which is a homogeneous mixture. It is not a compound because the nitrogen and oxygen are not chemically bound. It can be separated by fractional distillation of liquid air. It is essentially the same all the way through, although we know that there is less oxygen as you go up a mountain and more smog in the cities. The percentage stays about the same.
2007-09-22 06:13:12 · answer #4 · answered by science teacher 7 · 3⤊ 1⤋
it is not a compound for sure because you don't find only one type of compound in air like all the nitrogen combined with all the oxygen right?
it's a mixture of compounds. Mixture of Oxygen, carbon dioxide, nitrogen dioxide and so on.
and it's homogenous because you don't find all the oxygen floating on top of the layer of air just because it is less dense than carbon dioxide. this way, we would all have died because the oxygen is too high up for us to breathe in.
=)
2007-09-22 05:40:41 · answer #5 · answered by Gaara of the Sand 3 · 1⤊ 0⤋
it is homogeneous mixture
2007-09-22 05:39:14 · answer #6 · answered by Wan 8-D 2 · 2⤊ 0⤋