Question 15 of 22 Map c Sapling Learning Coal is the most common energy source.

Question

Question 15 of 22 Map c Sapling Learning Coal is the most common energy source. Buming coal for energy produces large quantities of atmospheric pollution that contain gases such as carbon dioxide (CO2) and sulfur oxides (SOx). Suppose a large power plant burns 250000 metric tons of coal (CusHg8OgNS) per year How many tons of carbon are produced by the power plant per year? Number t/ year Assuming all of the carbon bumed in coal is converted to CO2, how many grams of CO2 are produced by this power plant per year? Number g year

Explanation / Answer

mass of coal burned = 250000 metric tons

                     = 2.5*10^5 metric tons

                     = 2.5*10^8 kg

no of mol of Coal = 2.5*10^8/(1908.273) = 1.31*10^5 kilomol

no of mol of Carbon produced per year = 1.31*10^5*135 = 1.769*10^7 kmol

Mass of Carbon produced = 1.769*10^5*12*135 = 2.866*10^8 kg

                        = 2.866*10^5 ton/year

no of mol of CO2 produced per year = 1.769*10^7 kmol

mass of CO2 produced per year = 1.769*10^7*10^3*44

              = 7.784*10^11 g/year

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