Biology

Biology, 22.07.2019 01:00, dre4232

What stage of coal is most often used to heat houses and burns “cleanly”

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Biology, 30.06.2019 09:30, istangot7

Which of the following statements about energy sources is not correct? a. natural gas burns much more cleanly than gasoline. b. coal is easy to obtain with minimal environmental damage. c. oil can be refined into many different products, including plastics. d. nuclear energy can produce electricity without creating air pollution.

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Chemistry, 13.07.2019 20:10, pr47723

if iron pyrite, fes2, is not removed from coal, oxygen from the air will combine with both the iron and the sulfur as coal burns. if a furnace burns an amount of coal containing 198.20 g of fes2, how much so2 (an air pollutant) is produced? select one: a. 211.7 b. 52.92 c. 590.8 d. 582.1

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Biology, 18.07.2019 05:00, nunu5671

What type of coal burns the most efficiently and most cleanly?

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Physics, 05.10.2019 07:30, heavenwagner

Atypical coal-fired power plant burns 260 metric tons of coal every hour to generate 2.9×106 mj of electricity. 1 metric ton= 1000 kg; 1 metric ton of coal has a volume of 1.5 m3.the heat of combustion is 28 mj/kg. assume that all heat is transferred from the fuel to the boiler and that all the work done in spinning the turbine is transformed into electrical energy. suppose the coal is piled up in a 12 m × 8.0 m room. how tall must the pile be to operate the plant for one day? what is the power plant's thermal efficiency?

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