Absorption Spectroscopy

# Absorption Spectroscopy - CPU of the computer that it was...

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Absorption Spectroscopy Author: Austin Kelly Lab Partner: Daniel Swanson Instructor: Sveta Enman Chem 104a, Section 70 Date work performed: 24 October, 2007 Date work Submitted: 31 October, 2007

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Introduction The absorbance spectroscopy lab consists of calculating the dilution of one substance in another and then shining light through it and then measuring how much light was actually absorbed as well as how much light was not absorbed. This helps us determine the absorbency of the solution, mass of solid dissolved in solution, or percent ratio of what exactly the solution consists of (In parts per meter or ppm). In the lab itself, we are required to set up cuvettes with the specific dilution of the sample material and then place it in the OOI spectrometer that was attached to the plywood along with the

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Unformatted text preview: CPU of the computer that it was installed on. Calculations Results Gatorade (Riptide Rush) Molecular Weight Concentration Red Dye #1 792.86 g/Mol 0.00000696 Blue Dye #40 496.42 g/Mol 0.0000403 Red Dye #40 Absorbency Concentration Wavelength 2ml (20%) 0.392 0.00000806 510.08 nm 4ml (40%) 0.625 0.00001612 6ml (60%) 0.824 0.00002918 Blue Dye#1 Absorbency Concentration Wavelength 2ml (20%) 0.142 0.000001392 626.41 nm 4ml (40%) 0.351 0.000002784 6ml (60%) 0.528 0.000004176 Gatorade Absorbency Concentration Wavelength 2ml=2g 0.335 n/a 626.41 nm Blue Dye #1 0.1 0.2 0.3 0.4 0.5 0.6 2ml 4ml 6ml Concentration in 10ml Solution Absorbency (nm) Series1 Red Dye #40 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 2ml 4ml 6ml Concentration in 10ml Solution Series1...
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