12.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:

Combustion is an example of an oxidation reaction. Many fuels contain carbon and hydrogen atoms. These fuels burn to produce oxides, carbon dioxide and water.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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