University of Connecticut
EXPERIMENT 4, DETERMINATION OF AVOGADRO’S NUMBER
Type 2
Ariana Angulo
19 February 2018
General Chemistry 1127Q – Z83L
Spring 2018
Prof. M. Hanna
Purpose
The purpose of this lab is to estimate the volume taken up by one molecule of stearic acid
and the volume of a film consisting of a monolayer of stearic acid. In this experiment, we are
able to determine the number of molecules on the surface of the water. Using the density of the
stearic acid solution ( ) and the molar mass of stearic acid (284.48 g/mol), we are able.85 g/cm03
to calculate Avogadro’s number.
Data
Number of Drops per mL Cyclohexane
Trial 1
70
Trial 2
63
Trial 3
61
65
Trial 2
75
Trial 3
58
Trial 4
78
70
