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In a Power-time thermogram of an isothermal titration calorimeter, the power spikes/peaks associated with the sample injections in the sample cell when integrated with respect to time are representative of what? O A The internal energy of the reaction in the sample cell O B. The work done by the reaction in the sample cell O C. The enthalpy of the reaction in the sample cell O D. The total heat capacity of the reaction in the sample cell O E. The molar heat capacity of the sample injected