Weight of test tube and t-butanol weight of emtpy test tube weight of t-butanol freezing point of t-butanol Temperature (deg C) 45 40 35 30 15 10 5 0 0.000 ... 100.000 13.349 g 8.661 g 4.688 g 200.000 Cooling Curve Run #1 300.000 Time (s) 400.000 .... ● ● 500.000 600.000

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Q: i =

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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.