Gasoline molar mass

Answer 1

The molar mass of octane (C8H18), the primary component of gasoline, is approximately 114 g/mol. However, gasoline is a mixture of many hydrocarbons, some with as few as four carbons, while others have up to 12. According to US government agencies, such as DOE and EPA, on average, without adding any ethanol, the molar mass of gasoline is only 100 to 105 g/mol.

Answer 2

Gasoline vapor is composed of gasoline molecules in the gas phase. Whatever the molecular mass of gasoline is in the liquid or solid phase, it is the same in the gas phase. Octane, C8H18, is the primary hydrocarbon in gasoline, We can use octane to answer this question. The molecular mass of C8H18 can be determined by multiplying the subscripts for C and H by the atomic weight of each element and adding the results: (8 x 12.011 u) + (18 x 1.008 u) =114.232 u

Answer 3

Gasoline doesn't really have a molecular weight as such. It is a mixture of components with many different molecular weights. Answering this question any more usefully really requires an understanding of what you are trying to do.

Answer 4

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