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Unformatted text preview: Brandon Smith 10/2/07 Chemistry 107 section 530 Lab Experiment # 4; Interaction of Light with Matter: Beers Law Summary In our fourth experiment our objective was to determine the effects of path length, concentration, and color on the amount of light transmitted through a solution, in order to determine Beers Law. In part A, we first placed a cuvette of copper sulfate between a laser beam and a sensor, which would tell us how much light was being absorbed by the copper sulfate. As we put more and more cuvettes between the laser and the sensor, more and more light was being absorbed. We were then to fit our data to a graph, and we concluded that the inverse graph was the best fit. In part B, we did basically the same thing, except instead of putting multiple cuvettes of the same copper sulfate solution, we put only one cuvette between the sensor and laser, but diluting the solution more each time we recorded our data. In part C, instead of using copper sulfate, we used red food coloring to test if the food coloring would absorb more...
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