One sample of air is found to have 0.03% and another sample has 0.02% carbon dioxide. This illustrates that:

air is a compound

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air is an element

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air does not follow the law of constant proportions

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air is a mixture

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Solution

The correct option is D air is a mixture
Yes, this illustrates that air is a mixture because air is a composition of many types of gas.
A mixture contains a combination of several elements or compounds. For a mixture, the ratio of constituent elements or compounds is not fixed and it can vary.
Therefore, option D is the correct answer.

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Similar questions

(C a C O_{3})

A sample contains 22 gms of carbon dioxide. This is equal to:

A sample contains 22 g of carbon dioxide. This is equal to:

(C a C O_{3})

C a = 40 %; C = 12 %; O = 48 %

4 g

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