A 1.99 g sample of solid NaClO23H2O (s) is dissolved in 342 mL of water in a coffee cup calorimeter. Once all of the NaClO23H2O (s) is dissolved in the water, the final temperature of the solution is found to be 17.55C. If the initial temperature of the water in the calorimeter was 22.95 C, calculate the calorimeter constant (in J/K) for the coffee cup calorimeter. Report your answer to three significant figures. The heat of solvation of NaClO23H2O (s) is 28.58 kJ/mol.