When pure sodium hydroxide is dissolved in water, heat is evolved. in a laboratory experiment to measure the molar heat of solution of sodium hydroxide, the following procedure was followed. to a calorimeter containing 3.00 × 10^2 g of water at 20.00 °c, 10.65 g of naoh, also at 20.00 °c was added. the temperature of the solution, which was monitored by a digital thermometer with negligible heat capacity, increased to 28.50 °c. if the specific heat of the mixture is 4.184 j g^-1 °c^-1, and the small heat capacity of the calorimeter is ignored, what is the heat evolved, per mole of sodium hydroxide?