Question

question 14 of 30
a structural model of retinol is shown below. how many carbon atoms are in retinol?
a. 28
b. 20
c. 5
d. 14

Explanation:

Step1: Count carbon - atoms in structure

Count each carbon - containing group. In the structure, count the carbons in the ring and the side - chain. The ring has 6 + 5 = 11 carbons. The side - chain has 9 carbons.

Step2: Sum up carbon atoms

11+9 = 20

Answer:

B. 20