What is the molarity of a solution made by dissolving 15.0 g of NaOH (Molar Mass= 40.0:g) in enough water to make 250 ml of solution?

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Q: What conclusion can you reach if both Mw and Mn are determined to be identical?

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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.