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2 May, 17:11

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. 2 May, 18:26
    0
    D could be a answer
  2. 2 May, 19:45
    0
    carbon dioxide

    Explanation:

    the rest are mixtures

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