QUESTIONS: 1. An oleic acid, C17H33COOH (282 g/mol), solution is added to water in a watchglass until a monolayer forms. Assume that there are no spaces between molecules in the monolayer and that each oleic acid molecule occupies an area of 0.25 nm². If the concentration of the oleic acid solution is 0.00012 g/mL, what is the experimental value of Avogadro's number? dropper pipet calibration number of drops of oleic acid in the monolayer diameter of monolayer |||||| = = 65 drops/mL 16 drops 14.5 cm
QUESTIONS: 1. An oleic acid, C17H33COOH (282 g/mol), solution is added to water in a watchglass until a monolayer forms. Assume that there are no spaces between molecules in the monolayer and that each oleic acid molecule occupies an area of 0.25 nm². If the concentration of the oleic acid solution is 0.00012 g/mL, what is the experimental value of Avogadro's number? dropper pipet calibration number of drops of oleic acid in the monolayer diameter of monolayer |||||| = = 65 drops/mL 16 drops 14.5 cm
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
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Transcribed Image Text:EXPERIMENT NO.10: DETERMINATION OF AVOGRADOS NUMBER
OBJECTIVES
1. To determine Avogadro's number using a molecular monolayer technique.
2. To find the number of molecules in a monolayer. To find the moles of stearic acid in a
monolayer.
3.
To develop a sensitive technique in preparing a thin film of molecules
QUESTIONS:
1. An oleic acid, C17H33COOH (282 g/mol), solution is added to water in a watchglass until a
monolayer forms. Assume that there are no spaces between molecules in the monolayer and that
each oleic acid molecule occupies an area of 0.25 nm². If the concentration of the oleic acid
solution is 0.00012 g/mL, what is the experimental value of Avogadro's number?
N=
dropper pipet calibration
number of drops of oleic acid in the monolayer
diameter of monolayer
=
=
=
65 drops/mL
16 drops
14.5 cm
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