During a laboratory experiment, in a calorimeter containing 30 mL of water at 24.00°C, 40 mL of water at 55.00°C were added, achieving thermal equilibrium when 40.00°C is reached in the system. . Subsequently, the same calorimeter is used to dissolve 6.42 g of ammonium nitrate in 110.00 g of water at 23.00 °C. This system reaches equilibrium at a temperature of 19.05 °C. Consider that the heat capacity of ammonium nitrate is c_s=1.6643 J/(g.°C). Please indicate which of the following statements is correct: A. The heat capacity of the calorimeter is 75 J/°C, and the ammonium nitrate releases energy as it dissolves. B. The ammonium nitrate solution ΔH determined to be +25.7 kJ/g. C. The energy absorbed by the solution is released by the calorimeter. D. The ΔH of solution of ammonium nitrate determined is -24.7 kJ/mol E. The ΔH of solution of ammonium nitrate determined is +24.7 kJ/mol
During a laboratory experiment, in a calorimeter containing 30 mL of water at 24.00°C, 40 mL of water at 55.00°C were added, achieving thermal equilibrium when 40.00°C is reached in the system. . Subsequently, the same calorimeter is used to dissolve 6.42 g of ammonium nitrate in 110.00 g of water at 23.00 °C. This system reaches equilibrium at a temperature of 19.05 °C. Consider that the heat capacity of ammonium nitrate is c_s=1.6643 J/(g.°C).
Please indicate which of the following statements is correct:
A. The heat capacity of the calorimeter is 75 J/°C, and the ammonium nitrate releases energy as it dissolves.
B. The ammonium nitrate solution ΔH determined to be +25.7 kJ/g.
C. The energy absorbed by the solution is released by the calorimeter.
D. The ΔH of solution of ammonium nitrate determined is -24.7 kJ/mol
E. The ΔH of solution of ammonium nitrate determined is +24.7 kJ/mol
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