H- ОН 4CH2OH (A) 2R, 3R (B) 2R, 3S (C) 2S, 3R (D) 2S, 3S 8. What is the correct stereochemical description of the relationship between this pair of molecules? ОН нH CHз H/H НО Н CH3 (A) identical (B) constitutional isomers (C) enantionmers. (D) diastereomers What would be the stereochemical classification

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A: Solid iron reacts with solid sulfur to form a single product that is iron sulfide.

Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.