Alkanes are compounds of carbon and hydrogen with the general formula C_nH₂n₊₂. An alkane component of gasoline has a molar mass of between 125 and 130 g/mol. What is the value of n for this alkane? A)4 B)9 C)10 D)13 E)14

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Quizplus · Accepted Answer

The general formula for alkanes is CnH2n+2. To find the value of n for an alkane with a molar mass between 125 and 130 g/mol, we can use the molar masses of carbon (12 g/mol) and hydrogen (1 g/mol) in the formula. For example, if n = 9, the molar mass would be 12n + (2n+2) = 12*9 + (2*9+2) = 108 + 20 = 128 g/mol, which falls within the given range. Other values of n do not meet the criteria when calculated similarly.

Alkanes Are Compounds of Carbon and Hydrogen with the General