0.700 moles of an unknown solid is placed into water to make 150.0 mL of solution. The solution's temperature decreases by 7.11°C. Calculate AH, in kJ/mol, for the dissolution of the unknown solid. (The specific heat of the solution is 4.184 J/g.°C and the density of the solution is 1.02 g/mL).

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A: Dear student I have given answer to your question in the image format.

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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.