When 50.08 g of 1.00 m naoh at 23 °c is added to 50.22 g of 1.00 m hcl at 23 °c, the resulting temperature of the mixture is 29.7 °c. (assume that the calorimeter constant is equal to zero. assume that the solutions have the same specific heat capacity (4.184j / gk) and density (1.00g / ml) as water. what is the qsolution, enthalpy change, and is it endothermic or exothermic? .