Science, asked by amargiju, 10 months ago

which one of the following is not an example of a pure substance
1. Oxygen
2. copper
3. air
4. carbon dioxide

Answers

Answered by patrickgerald16

5

Answer:

copper is not a example of a pure substance

Answered by rsagnik437

44

Air is not a pure substance as it constains different gases not chemically combined together in a fixed proportion by mass.

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