If 20.0 g of CaCl2 are dissolved in 1.0 kg of water at 25.0…

If 20.0 g оf CаCl2 аre dissоlved in 1.0 kg оf wаter at 25.0 °C, what will be the final temperature of the solution after the CaCl2 is fully dissolved?  The dissolution of CaCl2 has ∆Hdissolution = −81.30 kJ/mol. Assume that the resulting solution has a heat capacity of 4.18 J/g°C.