What number should be substituted for the question mark to balance the equation and why is that the correct number? 2C2H6 + ? O2 → 4CO2 + 6H2O + heat A. The number 5 is needed to balance the equation. The right side shows 4 oxygen atoms in carbon dioxide and 6 oxygen atoms in water for a total of 10 oxygen atoms. B. The number 3 is needed to balance the equation. The right side shows 6 oxygen atoms, so the left side needs 3 oxygen atoms. C. The number 7 is needed to balance the equation. The right side of the equation shows 14 oxygen atoms, so the left side needs 7 * O2. D. The number 4 is needed to balance the equation. The right side of the equation shows 8 oxygen atoms, so the left side needs 4 * O2.

Question

Physics

Patricia Reynolds

16 February, 23:36

What number should be substituted for the question mark to balance the equation and why is that the correct number? 2C2H6 + ? O2 → 4CO2 + 6H2O + heat A. The number 5 is needed to balance the equation. The right side shows 4 oxygen atoms in carbon dioxide and 6 oxygen atoms in water for a total of 10 oxygen atoms. B. The number 3 is needed to balance the equation. The right side shows 6 oxygen atoms, so the left side needs 3 oxygen atoms. C. The number 7 is needed to balance the equation. The right side of the equation shows 14 oxygen atoms, so the left side needs 7 * O2. D. The number 4 is needed to balance the equation. The right side of the equation shows 8 oxygen atoms, so the left side needs 4 * O2.

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Kayla Ramirez · Answer 1

The solution to the question would be C. The number 7 is needed to balance the equation, as by doing so, you will have the total correct amount of oxygen atoms on the left side as per the right side of the reaction.