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October 16, 2014
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Absorption is thought to be an even more useful technique than emission, because emission requires an atom or molecule specific to its species. The educational objectives of the experiment include using a spectrophotometer, as well as understanding absorption spectroscopy as a quantitative technique, Beer's law, and quantitative dilutions...
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Because the amount of light absorbed or emitted is directly proportional to the number of atoms or molecules.
Raw Data and Observations: Please see attached.
Red #40: absorbance vs. concentration
Blue # 1: absorbance vs. concentration
? % Composition (Grape):
% Composition = (mass of Red #40 dye in sample / total mass of sample) (100%)
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