History

History, 30.08.2019 19:40, angelequej1167

What are coal
and iron called

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Advanced Placement (AP), 28.06.2019 01:30, emmadivaburnsox7ae9

Iron pyrite (fes2) is the form in which much of the sulfur exists in coal. in the combustion of coal, oxygen reacts with iron pyrite to produce iron(iii) oxide and sulfur dioxide, which is a major source of air pollution and a substantial contributor to acid rain. what mass of fe2o3 is produced from 84 l of oxygen at 3.41 atm and 148◦c with an excess of iron pyrite? answer in units of g.

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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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Chemistry, 24.07.2019 02:30, dpchill5232

Ancient metalworkers in east africa knew the secrets of strengthening their iron. they knew that if they melted their iron in a furnace fired with coal, then when it cooled and solidified it would be harder than the original iron. what really happened inside the hot furnace? coal is a form of carbon, so when its heat melted the iron, tiny particles of carbon dissolved into the liquid iron. this formed a solution. when the mixture of carbon and iron cooled and solidified, it was much harder than the original iron. since it was harder, it was much more useful for building things like tools and weapons. this solution of carbon dissolved in iron is called steel. every time you use a tool made out of steel, you are benefiting from the discoveries of those ancient metalworkers from long ago. read the description of how ancient metalworkers improved their iron. then identify the solute and solvent by filling in the blanks. in steel, the solvent is and the solute is .

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Chemistry, 05.10.2019 14:00, htrevino

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 202.33 g of fes2, how much so2 (an air pollutant) is produced?

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