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24 March, 22:22

Why is oxygen written with a subscript 2 in CO2?

.

A. Its mass is twice as great as the reactants'.

B. Each molecule of carbon dioxide has two oxygen atoms.

C. Its mass increases by two times as a result of the reaction.

D. Carbon always bonds to two oxygen atoms.

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Answers (2)
  1. 24 March, 23:20
    0
    the answer is b because C+o2

    c = carbon, o = oxygen
  2. 25 March, 00:51
    0
    the answer is b
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