Natural gas
•90-95% methane, 5-10% ethane
Petroleum
•gases (bp below 20°C)
•naphthas, including gasoline (bp 20 -
200°C)
•kerosene (bp 175 - 275°C)
•fuel oil (bp 250 - 400°C)
•lubricating oils (bp above 350°C)
•asphalt (residue after distillation)
Coal