A Styrofoam cup calorimeter is calibrated by adding heat to the water in it with an electrical heater. When 1.350 J of heat is added the temperature of the calorimeter raises by 3.5 C. When 1.0 g of NaOH is dissolved in this same calorimeter the temperature raises by 1.6 C. Calculate the calorimeter constant and enthalpy of solution for one mole of NaOH.