4NH, (g) + 50, (g) - 4NO (g) + 6H;0 () how many moles of excess reactant will be left when 4.0mol NH, react with 3.0 mol O, ? Select the correct answer below. O 24 mol 4.0 mol 1.6 mol both reactants will be used up completely

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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.