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Hydro-Carbon Fuels and Society. Hydro-Carbon fuels are some of the simplest and mot complex molecules man has refined for use. Most hydro-carbons are refined from crude oil by the process of fractional distillation, which I will go in to more depth later. Crude oil on its own is useless; however, its fractions are extremely useful. Modern society uses the fractions of crude oil for virtually everything. The hydro-carbons within crude oil can be use as fuels or to make plastics. As fuels, hydro-carbons are effective, can be efficient and relatively safe. As a result of this modern society uses hydro-carbons as the primary fuel, particularly in the combustion engine. The process of separating crude oil into its fractions is called fractional distillation. This is a simple process where the fact that different lengths of hydro-carbon chains have different boiling and melting points is used to separate the chains into useful products such...

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