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
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:Why do we need to cover the beaker with aluminum foil or saran wrap
To prevent the mobile phase from evaporating
O To prevent any outside dust from getting in
To prevent the stationary phase from evaporating
To speed up elution
Transcribed Image Text:What is the Rf value given the following information:
Height of Chromatography Paper: 5.0 cm
Distance from Bottom of Paper to Origin: 1.5 cm
Distance from Origin to Spot: 1.6 cm
Distance from Origin to Solvent Front: 2.9 cm
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