the initial temp is 24 and the final is 14

The dissociation of an unknown compound XY(s) in water is given by the following equation XY ($) "" Xqaq) + Y(aq) In a lab the following data was collected: Variable Quantity Volume of Calorimeter Water 185.0 mL Density of water 1.00 g/mL Mass of XY(s) 2.75 g Molar Mass of XY (s) 35.2 g/mol Note scale on thermometer is in degrees Celsius. Initial Reading Final Reading -14.0 13.0 - 26.0 20 -25.0 240 1a. Calculate the molar enthalpy of dissociation, aHm, of XY() . Show your work