NO LINKS air contains about 78% nitrogen and 21% oxygen. Based on this information, one can conclude that air? A.is a pure substance. B. is a mixture of at least two gases. C. consists of different states

NO LINKS

air contains about 78% nitrogen and 21% oxygen. Based on this information, one can conclude that air?
A.is a pure substance.

B. is a mixture of at least two gases.

C. consists of different states of matter.

D. consists of components that are chemically joined.

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