two solutions, initially at 24.69°c, are mixed in a coffee cup calorimeter. when a 200.0 ml volume of 0.100 m agno3 solution is mixed with a 100.0 ml sample of 0.100 m nacl solution, the temperature in the calorimeter rises to 25.16°c. determine the δh°rxn, in units of kj/mol agcl. assume that the density and heat capacity of the solutions is the same as that of water. hint: write a balanced reaction for the process. the specific heat capacity of water = 4.18 j/g°c.