Consider a 45.5 g sample of the compound diphosphorus pentabromide a) What is the chemical formula of diphosphorus pentabromide? b) Determine the molar mass of diphosphorus pentabromide. c) Determine how many moles are in 45.5 grams of diphosphorus pentabromide. d) Determine how many moles of bromine are in 45.5 grams of diphosphorus pentabromide. e) How many atoms of phosphorus are in 45.5 grams of diphosphorus pentabromide?

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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.