Question

When 2.989 g of LiOH is dissolved in 100 g of water initially at 23.85 ˚Celsius in a coffee-cup calorimeter, the final temperature is found to be 29.86 ˚Celsius. Calculate the heat released/absorbed per gram of LiOH and per mol of LiOH when LiOH dissolves in water. NOTE: The heat capacity of calorimeter is 5.09 J ˚C-1. Assume the specific heat of the solution is the same as that of pure water.