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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
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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.

User Jemshit
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B because there is 2 gases in the air that we know of because of the text
User Derabbink
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