An engine operating on methane (CH4) as fuel at 1500 rpm, WOT, generates the following emissions measured on a dry volumetric basis:
CO2 10.4 %
CO 1.1 %
H2 0.6 %
O2 0.9 %
NO 600 ppm
CH4 1100 ppm
If the specific fuel consumption is 250 g/kW-h, calculate the specific emissions of CO, NO, and CH4 (in g/kW-h).

The specific emmisions can be calculated with the help of equation equillibrium as in the attached solution. When two or more molecules combine to create a new product, the process is known as a chemical reaction (s). Reactants are substances that interact to make new substances, whereas products are those substances that result from the interaction. A chemical change that is typically seen with physical changes like precipitation, heat production, colour change, etc. must take place in a chemical reaction. No atom is generated or destroyed in a reaction between two atoms, ions, or molecules, but instead a new product is created from the reactants. Pressure, temperature, and the concentration of the reactants all have an impact on the rate of reaction.

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