2.1 grams of urea is dissolved in 51.67 grams of water. The water had an initial temperature of 19.47 C before the urea was added. After the urea was dissolved in the water, the temperature of the solution was measured to be 17.2 C. What is the change in enthalpy for dissolving urea based on these data? Report your answer to the nearest whole number. It takes 3.47 mL of water to fully dissolve 3.24 grams of urea to form a saturated solution at a temperature of 19.82 C. What is the change in free energy of this process? Report your answer to the nearest whole number.