Question

question 7 (1 point)
which of the following compounds contains 10 carbon atoms?
2,2,3 - trimethylheptane
octane
2 - methyldecane
2,3 - dimethylheptane

Explanation:

Step1: Analyze the base - name and substituents

• For 2,2,3 - trimethylheptane:
• The base - name is heptane ($C_7H_{16}$), and there are 3 methyl ($-CH_3$) substituents.
• The total number of carbon atoms is $7+3 = 10$.
• For octane:
• The formula of octane is $C_8H_{18}$, so it has 8 carbon atoms.
• For 2 - methyldecane:
• The base - name is decane ($C_{10}H_{22}$), and there is 1 methyl ($-CH_3$) substituent.
• The total number of carbon atoms is $10 + 1=11$.
• For 2,3 - dimethylheptane:
• The base - name is heptane ($C_7H_{16}$), and there are 2 methyl ($-CH_3$) substituents.
• The total number of carbon atoms is $7+2 = 9$.

Answer:

2,2,3 - trimethylheptane