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Combustion reactions take place between a fuel and oxygen and produce carbon dioxide and water. Balance the following combustion reaction.

C₂H₆O  +  3 O₂  ⇒  2 CO₂  + 3 H₂O

Explanation:

To balance an equation, the number of atoms on one side should be equal to atoms on the other side.

Explanation:

Since there are 2 carbons on the left for one on the right, there need to be 2 CO2's per C2H6O. Also, since there are 6 hydrogens on the left per 2 on the left, you need 3 H2O's per C2H6O. Now, since there are 2 CO2's and 3 H2O's on the right, that is a total of 7 oxygens on the right and 1 on the left, meaning that you need 3 O2's. Therefore, the equation is:

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