0.81 g sample of KCl is added to 37.9 g H2O and stirred until KCl completely dissolves in a 26.03.2021 Styrofoam cup. The temperature of the solution drops from 24.5 to 23.0 o C. (a) Is the process endothermic or exothermic? (b) What is the heat of solution of KCl expressed in kilojoules per mole of KCl? (Specific heat of water: 4.18 J/g o C)

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