1) A calorimeter contains 28.0 mLof water at 11.5 degreesCelcius. When 2.10 g of X (a substance with a molar massof 79.0 g/mol) is added, it dissolves via the reaction X(s) + H2O(l) :::::::::> X(aq) and the temperature of the solution increases to29.0 degrees Celsius.
a) Calculate the enthalpy change,ΔH, for thisreaction per mole of X.Assume that the specific heat and density of the resultingsolution are equal to that of water [4.18J/g.Celcius and 1.00g/mL]and that no heat is lost to the calorimeter itsef, nor to thesurroundings.