When a 6.00-g sample of RbBr is dissolved in water in a calorimeter that has a total heat capacity of…

When a 6.00-g sample of RbBr is dissolved in water in a calorimeter that has a total heat capacity of 2.037 kJ·K–1, the temperature decreases by 0.390 K. Calculate the molar heat of solution of RbBr.