Problem- A calorimeter is to be calibrated: 51.203 g of water at 55.2 degrees C is added to a calorimeter containing 49.783 g of water at 23.5 degrees C. After stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degrees C. Calculate the calorimeter constant.

Using the same calorimeter from the above question, calculate the amount of heat evolved when 50.00 ml of 0.400 M copper (II) sulfate solution at 23.35 degrees Celsius is mixed with 50.00 ml of 0.600 M sodium hydroxide solution a same temperature. After the reaction occurs, the final temperature of the resulting mixture is measured to be 25.23 degrees Celsius. The density of the final solution is 1.02 g/ml. Assume the specific heat of solution is the same as pure water, 4.184 J/g degrees Celsius.

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