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contents in the calorimeter.

Chemical Processes

Part 2: Hand Warmer

  1. Wash and dry the thermometer. HINT: Remember to rinse it with dis lled water before drying.
  2. Carefully place and hold the thermometer in another Styrofoam cup.
  3. Cut open the inner package of a hand warmer and quickly transfer all of its contents into the calorimeter. Immediately record the ini al temperature of the contents and being ming the reac on. HINT: Data collec‐ on should start quickly a er the package is opened because the reac on will be ac vated as soon as it is

exposed to air.

  1. Quickly insert the s rring rod into the cup and begin s rring the contents in the calorimeter.
  2. Con nue s rring and record the temperature at thirty second intervals in Table 2. You will need to s r the reac on the en re me you are recording data.
  3. Let the reac on con nue for at least five minutes and un l the temperature has reached its maximum and then fallen a few degrees. This should take approximately 5 to 7 minutes.
  4. Record the overall maximum temperature in the appropriate place in the data table.

Data

Please submit your table data and answers for this experiment on the Word document provided to you.

Table 1: Cold pack data

Time (sec) Temp. (0C) Time (sec) Temp. in (0C)

Ini al 240

30 270

60 * 300

90 330

120 360

150 390

180 420

210 450

Minimum Temperature (0C) : __

63

Lab 5: Chemical Processes

Table 2: Hand warmer data

Time (sec) Temp. (0C) Time (sec) Temp. in (0C)

Ini al 240

30 270

60 * 300

90 330

120 360

150 390

180 420

210 450

Maximum Temperature (°C) : __

64

Lab 5: Chemical Processes

Graph your data from the tables on the Word document provided to you. You may create the graph on any program, but make sure it can be integrated into the Word document.