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12 August, 22:40

In the reaction C7H16 + __O2 → 8H2O + 7CO2, what coefficient should be placed in front of O2 to balance the reaction?

7

8

11

no coefficient is needed

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Answers (1)
  1. 13 August, 00:31
    0
    The answer is 11

    11 O2 is 22 oxygen atoms

    8 H2o means there is 8 atoms of oxygen needed here

    7 CO2 means you need 14 oxygen atoms here

    14 Pkus 8 is 22
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