Question

question 9 of 30
a structural model of adrenaline is shown below. how many hydrogen atoms are in adrenaline?
a. 3
b. 13
c. 4
d. 16

Explanation:

Step1: Count H - atoms on benzene ring

The benzene - like ring has 3 hydrogen atoms attached to it.

Step2: Count H - atoms on side - chains

The side - chain with the hydroxyl group has 2 hydrogen atoms, and the amino - containing side - chain has 4 hydrogen atoms. Also, there are 3 hydrogen atoms on the methyl group attached to nitrogen. And there are 4 hydrogen atoms on the hydroxyl groups.

Step3: Sum up all H - atoms

$3 + 2+4 + 3+4=16$

Answer:

D. 16