When a 2.00 g sample of RbBr is dissolved in water in a calorimeter that has a total heat capacity of 0.854 kJ⋅K−1, the temperature decreases by 0.310 K. Calculate the molar heat of solution of RbBr.

Igonna be honest i dunno that one srry

Maybe you should get some from your teacher and learn more so you can get your grades up and maybe study a bit more

Heat is involved in chemical change in two ways; chemical changes either result in heat being added to or removed from an object, and chemical changes require a certain amount of heat before they can take place.