In a coffee-cup calorimeter, 1 mol naoh and 1 mol hbr initially at 25.5 oc (celsius) are mixed in 100g of water to yield the following reaction: naoh + hbr → na+(aq) + br-(aq) + h2o(l)after mixing the temperature rises to 86 oc. calculate the change in enthalpy of this reaction. specific heat of the solution = 4.184 j/(g oc)the molecular weight of naoh is 40.0 g/mol, and the molecular weight of hbr is 80.9 g/mol.δh =