A student is preparing to perform a series of calorimetry experiments. She first wishes to determine the calorimeter constant (ccal) for her coffee cup calorimeter. She pours a 50. 0 ml sample of water at 345 k into the calorimeter containing a 50. 0 ml sample of water at 298 k. She carefully records the final temperature of the water as 317 k. What is the value of ccal for the calorimeter?.