When a 6.16 g sample of solid sodium hydroxide (molar mass 40.00 g/mol) dissolves in 100.0 g water in a coffee cup calorimeter, the temperature rises from 21.6 to 37.8 °C. Calculate ΔH (in kJ/mol NaOH) for the solution process. Assume that the specific heat of the solution is the same as that of pure water. (Use three significant figures; do not include units.)