问题1:Name the alkanes that are commonly found in LPG(liquefied petrolenm gas).
问题2:Melting point,boiling point and flashpoint are all physical properties. Not all alkanes have physical properties that would allow them to be stored under pressure inside a gas cylinder. Explain why the physical properties of the alkanes found in LPG make them suitable to be used in this way.
问题3:Describe the dangers associated with the improper use of LPG fuel.