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  1. excess combustion air. Combustion Analysis R e a d i n g L e v e l s P o s s i b l e C a u s e s O2 80% = 6-9% 90% = 3-9% LOW = Lack of combustion air, too much fuel, restricted heat exchanger or vent pipe. HIGH = Excess combustion air, lack of fuel. CO(AF) >400ppm - Shutdown Unit <100ppm - Passes <50ppm - Good

  2. Combustion Analysis and Concentration (Worksheet) Name: ______________________________. Section: _____________________________. Student ID#:__________________________. Work in groups on these problems. You should try to answer the questions without referring to your textbook.

  3. Combustion Analysis This technique requires that you burn a sample of the unknown substance in a large excess of oxygen gas. The combustion products will be trapped separately from each other and the weight of each combustion product will be determined. From this, you will be able to calculate the empirical formula of the substance.

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  5. Combustion takes place when fuel, most commonly a fossil fuel, reacts with the oxygen in air to produce heat. The heat created by the burning of a fossil fuel is used in the operation of equipment such as boilers, furnaces, kilns, and engines. Along with heat, CO2 (carbon dioxide) and H20 (water) are created as byproducts of the exothermic ...

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  6. www.chemdunn.org › the-mole › combustion-analysisCombustion Analysis

    Combustion analysis is a technique used to determine the elemental composition of a compound containing carbon, hydrogen, and sometimes nitrogen. Here are some key concepts to understand when studying combustion analysis: Combustion analysis involves burning a sample of the compound in excess oxygen to convert all of the carbon to carbon ...

  7. Feb 12, 2023 · Given: mass of sample and mass of combustion products. Asked for: empirical formula. Strategy: Use the masses and molar masses of the combustion products, CO 2 and H 2 O, to calculate the masses of carbon and hydrogen present in the original sample of naphthalene.

  8. 1.) Researchers used a combustion method to analyze a compound used as an antiknock additive in gasoline. A 9.394 mg sample of the compound yielded 31.154 mg of carbon dioxide and 7.977 mg of water in the combustion. Calculate the percent composition of the compound. 2.) A 1.50 g sample of hydrocarbon undergoes complete combustion to produce 4. ...

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