In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction. Since the cup itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as calibrating the calorimeter and the value determined is called the calorimeter constant. One way to do this is to use a common metal of known heat capacity. In the laboratory a student heats 91.21 grams of zinc to 97.74 C and then drops it into a cup containing 80.47 grams of water at 22.83 C. She measures the final temperature to be 29.92 C. Using the accepted value for the specific heat of zinc (See the References

tool), calculate the calorimeter constant. Calorimeter Constant = J/C.