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n the following experiment, a coffee-cup calorimeter containing 100 \rm mL of \rm H_2O is used. The initial temperature of the calorimeter is 23 \rm...

n the following experiment, a coffee-cup calorimeter containing 100 rm mL of rm H_2O is used. The initial temperature of the calorimeter is 23 rm ^{circ}C. If 9.80 g of rm CaCl_2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? The heat of solution Delta H_{rm soln} of rm CaCl_2 is rm -82.8~kJ/mol.

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