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Coal Research Paper

223 Words1 Pages
Coal: coal is the only one still in a solid state. Coal is composed of five different elements include carbon, nitrogen, oxygen, hydrogen, and sulfur, with the distributions of those five elements varying depending on the piece of coal. In fact, because of these differing elemental make-ups, there are actually three different types of coal, each with different energy properties. The highest in energy content is anthracite coal, which is harder and has a higher distribution of carbon than the other varieties. The other two types of coal include lignite and bituminous – aren’t quite as energy-rich, but still have their uses. Lignite is high in oxygen and hydrogen instead of carbon, while bituminous occupies a sort of happy medium between the
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