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What is the approximate amount of heat in j involved in the

A 0.485 g sample of KCl is added to 51.9 g of water in a calorimeter. If the temperature decreases by 1.23°C, what is the approximate amount of heat (in J) involved in the dissolution of the KCl, assuming the heat capacity of the resulting solution is 4.18 J/g°C?

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