Final answer:
Coke production from bituminous coal involves heating to drive off volatile matter, forming a residue used in iron smelting. Bituminous coal, abundant in the US, releases sulfur dioxide when burned, contributing to acid rain. Coal, a complex hydrocarbon material, is categorized by rank based on its composition and heating value.
Explanation:
Coke is produced by heating low-sulfur, low-ash bituminous coal at high temperatures in the absence of oxygen until volatile components are driven off, leaving a carbon and ash residue. Coke is used as a fuel and reducing agent in smelting iron ore in blast furnaces.
Bituminous coal, containing high sulfur content due to pyrite presence, is the most abundant coal type in the United States. When bituminous coal is burned, it releases sulfur dioxide, a major contributor to acid rain.
Coal is a complex hydrocarbon-like material formed from ancient biomass degradation and geological processes, differentiated by coal rank based on fixed carbon percentage, volatile matter, and heating value.
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