Question

question 16 of 30
what is hexane?

a. a hydrocarbon molecule containing seven carbon atoms and only single bonds

b. a hydrocarbon molecule containing seven carbon atoms and six double bonds

c. a hydrocarbon molecule containing six carbon atoms and one double bond

d. a hydrocarbon molecule containing six carbon atoms and only single bonds

Explanation:

Hexane is an alkane. Alkanes have the general formula \( C_nH_{2n + 2}\) and contain only single - bond carbon - carbon and carbon - hydrogen bonds. The prefix "hex - " in hexane indicates that there are 6 carbon atoms.

• Option A: Hexane does not have 7 carbon atoms, so A is incorrect.
• Option B: Hexane has only single bonds (it is an alkane) and does not have 7 carbon atoms, so B is incorrect.
• Option C: Hexane has only single bonds (no double bonds), so C is incorrect.
• Option D: Hexane has 6 carbon atoms and only single bonds, which matches the definition of hexane.

Answer:

D. A hydrocarbon molecule containing six carbon atoms and only single bonds