The salt cesium perchlorate is soluble in water. When 2.79 g of CsClO 4 is dissolved in 106.00 g of water, the temperature of the solution decreases...

The salt cesium perchlorate is soluble in water. When 2.79 g of CsClO4 is dissolved in 106.00 g of water, the temperature of the solution decreases from 25.00 to 23.42 °C. Based on this observation, calculate the enthalpy of dissolution of CsClO4 (in kJ/mol). 

Assume that the specific heat of the solution is 4.184 J/g °C and that the heat absorbed by the calorimeter is negligible.

ΔHdissolution =  kJ/mol