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5 December, 11:01

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

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Answers (2)
  1. 5 December, 11:11
    0
    D could be a answer
  2. 5 December, 11:24
    0
    carbon dioxide

    Explanation:

    the rest are mixtures

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