A total of 2.00 mol of a compound is allowed to react in a foam coffee cup that contains 138 g of water. The reaction caused the temperature of the water to rise from 21.0 to 24.7 C.
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself. Enter your answer in kilojoules per mole of compound to three significant figures.