A student wants to measure Avogadro’s number, they make a monolayer with a cetyl alcohol-hexane solution in a petri dish. They plan to use a cubic model to try to determine the volume of each molecule of cetyl alcohol.

In order for the monolayer to form the student had to add 30 drops of 1.08 x 10-4 g/mL
(cetyl alcohol in hexane solution).
The density of pure cetyl alcohol is 0.818 g/cm3.
The diameter of the petri dish used was 27.5 cm.
The medicine dropper calibration was 52 drops per 1 mL.
The volume of a cube is equal to the thickness of the monolayer cubed.
Based on this information, what is the value for Avogadro’s number?

a. What is the volume of cetyl alcohol-hexane solution used to make the monolayer?
(medicine dropper calibration and number of drops).

b. What is the mass of pure cetyl alcohol added to make the monolayer?
(concentration of cetyl alcohol and volume of cetyl alcohol-hexane solution)