Complete combustion of methane yields which products?

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Multiple Choice

Complete combustion of methane yields which products?

Explanation:
When a hydrocarbon burns with plenty of oxygen, it undergoes complete combustion and forms carbon dioxide and water. For methane, the balanced equation is CH4 + 2 O2 → CO2 + 2 H2O. This shows why the products are carbon dioxide and water: all the carbon ends up as CO2 and all the hydrogen ends up as H2O. The other options don’t fit this scenario. Carbon dioxide only would miss the water produced, methane and oxygen are reactants, not products, and carbon monoxide and water indicate incomplete combustion due to insufficient oxygen, producing CO instead of CO2.

When a hydrocarbon burns with plenty of oxygen, it undergoes complete combustion and forms carbon dioxide and water. For methane, the balanced equation is CH4 + 2 O2 → CO2 + 2 H2O. This shows why the products are carbon dioxide and water: all the carbon ends up as CO2 and all the hydrogen ends up as H2O.

The other options don’t fit this scenario. Carbon dioxide only would miss the water produced, methane and oxygen are reactants, not products, and carbon monoxide and water indicate incomplete combustion due to insufficient oxygen, producing CO instead of CO2.

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