what is the value of n in ch3(ch2)nch3 if the name of the hydrocarbon is heptane? 2 5 7 8

Answer

Explanation:

Step1: Recall heptane's carbon - atom count

Heptane has 7 carbon atoms.

Step2: Analyze the given formula

In $CH_3(CH_2)_nCH_3$, the two terminal $CH_3$ groups contribute 2 carbon atoms. The $(CH_2)_n$ part contributes $n$ carbon - atom pairs. So the total number of carbon atoms is $2 + n$.

Step3: Set up an equation

We know that $2 + n=7$.

Step4: Solve the equation

Subtract 2 from both sides: $n = 7 - 2=5$.