what is chemical formula of kerosen ,LPG & lubricating oil

Kerosene is mixture of alkanes having carbons from 12 carbons to 15 carbons. The molecular formula will be C12H26 to C15H32 . The name of C12H26 is dodecane and of C15H32 is pentadecane. The structure is :
 

LPG is Liquefied Petroleum Gas. It is a combination of Propane (chemical formula C3H8) and Butane (chemical formula C4H10).

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Kerosene :-
                      Kerosene has more than one chemical structure because it contains carbons from 12 carbons to 15 carbons. The molecular formulas can range from C12H26 to C15H32.

LPG(Liquefied Petroleum Gas) :-
                                                            
Propane is an energy-rich gas. Its chemical formula is C3H8. It is one of the liquefied petroleum gases (LPGs) that are found mixed with natural gas and oil.

lubricating oil :- 
                         
Lubricating oils (petroleum), C20-50
                                                            



 
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