what is the name of the hydrocarbon ch3(ch2)6ch3?\nbutane\ndecane\noctane\npropane

what is the name of the hydrocarbon ch3(ch2)6ch3?\nbutane\ndecane\noctane\npropane
Answer
Answer:
C. octane
Explanation:
Step1: Analyze the carbon - atom count
The formula is $CH_3(CH_2)_6CH_3$. The number of carbon atoms can be calculated as follows: The two terminal $CH_3$ groups contribute 2 carbon atoms, and the $(CH_2)_6$ part has 6 carbon atoms. So the total number of carbon atoms $n=2 + 6=8$.
Step2: Recall the naming convention
Hydrocarbons with the general formula $C_nH_{2n + 2}$ are alkanes. For alkanes, the prefixes for the number of carbon - atoms are: 3 - propane, 4 - butane, 8 - octane, 10 - decane. Since $n = 8$, the name of the hydrocarbon is octane.