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23 March, 18:14

How many atoms of Oxygen (O) in the reactants of the equation below:

6CO2 + 6H2O - -> C6H12O6 + 6O2

18

19

20

30

+3
Answers (2)
  1. 23 March, 19:16
    0
    Answer: 18 atoms

    Explanation: the reactant contains 6O2 and 6O and this gives a total of 18
  2. 23 March, 19:58
    0
    The correct option is 18

    Explanation:

    There are two reactant specie in the equation; carbon dioxide (CO₂) and water (H₂O). From the equation, there are 6 molecules of CO₂, hence the number of oxygen atoms from CO₂ is 6 * 2 = 12 and there are also 6 molecules of H₂O, hence the number of oxygen atoms from H₂O is 6 * 1 = 6.

    The total number of oxygen atoms in the reactants is therefore 12 + 6 = 18
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