Calorimetry

Materials

Procedures

  1. Put on goggles and apron
  2. Measure and record the mass of the foam calorimeter.
  3. Pour 200mL of water into the foam calorimeter.
  4. Measure and record the mass of the foam calorimeter and water.
  5. Calculate the mass of the water.
  6. Take the temperature of the water in the foam calorimeter. (Record this temperature as the initial temperature of the water.)
  7. Measure and record the mass of the unknown metal.
  8. Pour another 200mL of water into the beaker and place the unknown metal in the beaker. (Check the temperature of water in the beaker.)
  9. Heat the unknown metal in the beaker of water on the hot-plate until boil.
  10. Take the temperature of the water in the beaker with the unknown metal. (Record this temperature as the initial temperature of the unknown metal.)
  11. Place the thermometer in the hole on the foam cap.
  12. Use tongs to remove the unknown metal from the boiled water and drop it into the foam calorimeter.
  13. Immediately place the foam cap onto the foam calorimeter.
  14. Take the temperature of the water and the metal as soon as the thermometer stops moving. (Thermometer reading may fluctuate.)(Record this temperature as the final temperature.)
  15. Turn off and unplug the hot-plate.
  16. Use beaker tongs to pour out hot water in the sink and set the beaker on the table.
  17. Clean up.
  18. Answer questions in analysis.

Data

mass of foam calorimeter ???
mass of foam calorimeter + water ???
mass of water ???
mass of unknown metal ???
initial temperature of water ???
initial temperature of metal ???
final temperature ???

Questions

1. What is the DT of the water in the calorimeter? ???
2. What is the DT of the unknown metal? ???
3. Calculate the heat change for the water. (Specific heat capacity for water is 4.184J/g×°C.) ???
4. What is the heat change for the unknown metal? ???
5. Calculate the specific heat of the unknown metal. ???



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