# Review I Constants I Periodic TableCalorimetry is a method used to measure changes in enthalpy, orheat, that occur during chemical processes. Two commoncalorimeters are constant-pressure calorimeters and constant-volume (or "bomb") calorimeters. Bomb calorimeters are used tomeasure combustion and other gas-producing reactions, in whichthe reaction is observed in a strong, sealed vessel. A simplePart AIn the following experiment, a coffee-cup calorimeter containing 100 mL of H20 is used. The initial temperature of the calorimeter is 23.0 °C. If 9.100 g ofCaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? The heat of solution AHsoln of CaCl2 is-82.8 kJ/mol.constant-pressure calorimeter can be made from a foam coffeecup and a thermometer, in which energy changes in a reactionare observed via the change in temperature of the solution in thecup. The idea behind calorimeters is that if they are sufficientlyinsulated from the outside environment, any energy gained or lostin the chemical reaction will be directly observable as atemperature and/or pressure change in the calorimeter.Assume that the specific heat of the solution formed in the calorimeter is the same as that for pure water: Cs = 4.184 J/g .° C.Express your answer with the appropriate units.• View Available Hint(s)HẢValueUnitsSubmit

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Step 1

The number of moles of CaCl2 in the given system is calculated using equation (1),

Step 2

The heat released by the given mass of calcium chloride solution is calculated as,

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