Which gases are commonly found in products of combustion?

The correct answer highlights the gases that are typically produced during the combustion process. When a fuel undergoes combustion, it reacts with oxygen (O2) to produce various byproducts. In ideal combustion, hydrocarbons yield carbon dioxide (CO2) and water vapor (H2O).

While the selected option includes carbon dioxide (CO2) and hydrogen (H2), it also incorporates nitrogen (N2) and oxygen (O2). Nitrogen is predominantly present in air and is typically carried along during combustion processes, though it does not participate in the reaction.

Given the context of combustion, it’s imperative to recognize the role of CO2 and H2O as two primary products of complete combustion. Incomplete combustion would produce carbon monoxide (CO) and other hydrocarbons, which are not represented in the selected answer.

The other options present various combinations of gases, but they do not accurately reflect the typical outputs encountered during combustion processes. For instance, methane (CH4) is a fuel, not a product, and hydrogen (H2) does not usually appear in notable quantities resulting from combustion unless specifically produced from other processes rather than being a direct combustion product. Understanding which gases typically arise from combustion helps in recognizing and interpreting data related