A generic solid, X, has a molar mass of 84.0 g/mol. In a constant-pressure calorimeter, 11.6 g of X is dissolved in 289 g of water at 23.00 °C.
X(s) ——> X(aq)
The temperature of the resulting solution rises to 24.90 °C. Assume the solution has the same specific heat as water, 4.184 J/(g·°C), and that there’s negligible heat loss to the surroundings. How much heat was absorbed by the solution?