The δh for the solution process when solid sodium hydroxide dissolves in water is 44. 4 kj/mol. When a 12. 6-g sample of naoh dissolves in 250. 0 g of water in a coffee-cup calorimeter, the temperature increases from 23. 0 °c to °c. Assume that the solution has the same specific heat as liquid water, i. E. , 4. 18 j/g-k.