... Homework Unanswered The Diels-Alder reaction proceeds through a concerted mechanism. This means that Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a The reaction is exothermic. A ring structure is formed by the reaction. All the bond breaking and forming takes place at the same time with no intermediates. Both endo and exo products will be formed. e The diene must be in an s-cis configuration. Pl

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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.