1. Introduction
Fossil fuels have three types: coal, natural gas and petroleum (crude oil)
methane (CH4) is the main constituent of natural gas
Petroleum is a mixture of hydrocarbons
2. Fractional distillation
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Fossil fuels have three types: coal, natural gas and petroleum (crude oil)
methane (CH4) is the main constituent of natural gas
Petroleum is a mixture of hydrocarbons
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