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Which of these can be classified as a substance A) oxygen B) carbon dioxide C) air D) acid rain

User Maxmelbin
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2 Answers

3 votes

Answer:

carbon dioxide

Step-by-step explanation:

the rest are mixtures

A chemical substance is composed of one type of atom or molecule.

User Mehdi Sakout
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4 votes

D could be a answer

User Bryan Weaver
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