If 40.5 g of KCI are dissolved 250.0 g of water at 25.0 °C in an insulated container, a temperature change is observed. The AH of solution of KCI is 17.2 kJ/mol. Assuming that the specific heat of the solution is 4.184 J/(g°C), and that no heat is gained or lost by the container, what will be the final temperature of the solution?

When 40.00 grams of fictional compound X is added to water to make 236.0 grams of solution, the temperature increases from 19.05 °C to 63.46 °C. What is the heat of solution for compound X (in kJ/mol) given that the molar mass of compound X is 73.87 g/mol. Assume the specific heat capacity of the solution is 4.18 J/g°C.

How much heat would have to be absorbed by 2000 g of water to change its temperature from 20°C to 50°C? Use the value 4.2 J/mol °C for the specific heat of water.

What is the heat capacity of 2.63 mol of liquid water?   How many kJ of heat are needed to raise the temperature of 2.60 kg of water from 41.1 oC to 70.9 oC?

The temperature of 34.7 g H2O changes from 27 °C to 53 °C. What is the heat associated with this change? Is heat flowing into or out of the water? How do you know?

A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 156 g of solution. The reaction caused the temperature of the solution to rise from 21.00 to 24.70 degrees Celsius. What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water. Enter your answer in kilojoules per mole of compound to three significant figures.

The molar heat of solution of a substance is found to be +21.38 kJ/mol. The addition of 0.100 mol of this substance to 1.000L of water initially at 40.0 degrees celsius results in a temperature decrease. Assume the specific heat of the resulting solution to be equal to that of pure water. Find the final temperature of the solution (Also assume that the heat capacity of the calorimeter is negligible).

The enthalpy of solution (∆H) of KOH is -57.6 kJ/mol. If 2.26 g KOH is dissolved in enough water to make a 150.0 mL solution, what is the change in temperature (°C) of the solution? (The specific heat capacity of the solution is 4.184 J/g･°C and the density of the solution is 1.02 g/mL).

When 53.14 grams of fictional compound X is added to water to make 522.1 grams of solution, the temperature increases from 20.89 °C to 64.83 °C. What is the heat of solution for compound X given that the molar mass of compound X is 91.01 g/mol? Assume the specific heat capacity of the solution is 4.18 J/g°C.     164.2 kJ/mol     -164.2 kJ/mol     -95.90 kJ/mol     -11.74 kJ/mol     95.90 kJ/mol