Hydrocarbons: carbon as carbon dioxide

I am not sure what you were asking. But here is something. Hydrocarbon combustion refers to the type of reaction where a hydrocarbon reacts with oxygen to create carbon dioxide, water, and heat. hydrocarbons are molecules consisting of both hydrogen and carbon. Methane combining with two oxygen to form carbon dioxide, water and Heat. I hope I helped.

The answer is 4 i don't know if its right let me see.