A total of 2.00 mol of a compound is allowed to react in a foam coffee cup that contains 154 g of water. The reaction caused the temperature of the...

A total of 2.00 mol of a compound is allowed to react in a foam coffee cup that contains 154 g of water. The reaction caused the temperature of the water to rise from 21.0 to 24.7 degrees C. What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself.