What is the molar absorptivity of a 2.50 x 10-4 M solution if its absorbance at 550 nm is 0.500? The sample is placed in the standard 1-cm quartz cuvette.      2.00 x 10-3 M-1cm-1     5.00 x 10-4 M-1cm-1     2.00 x 103 M-1cm-1     1.25 x 10-4 M-1cm-1

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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.