Determine the appropriate LED colour and wavelength range that should be used to measure the absorbance of red, blue and yellow dye solutions. I think it has something to do with complimentary colours but im not sure

Q: aqueous solution of a purine triphosphate at a concentration of J. sodium dehydrate (molar mass 586…

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Q: A solution in part C initially contains (4.2100x10^-4) molar SCN¯ and (3.1700x10^-3) molar Fe3+.…

A:

Q: A FeSCN complex, whose maximum absorbance is at a λ of 580 nm, has a molar extinction coefficient of…

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Q: At 580 nm, which is the wavelength Fe(SCN) has a molar absorptivity of 7.00 x 10' 1. cm' mot.…

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Q: Calculate the concentration in ppm of cadmium in an unknown which exhibits an absorbance of 0.179.

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Q: A solution in part C initially contains (4.1000x10^-4) molar SCN¯ and (1.180x10^-1) molar Fe3+. This…

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Q: A solution in part C initially contains (4.0300x10^-4) molar SCN¯ and (2.880x10^-3) molar Fe3+. This…

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Q: Part A The emission line used for zinc determinations in atomic emission spectroscopy is 214 nm. If…

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Q: Roberta decided to find out the content of nickel (Ni) in a sample. She dissolved the 0.0882 g…

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Q: A solution in part C initially contains (4.06x10^-4) molar SCN and (2.960x10^-3) molar Fe3+. This…

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UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.