Phys Determining the Specific Heat of a Metal Nail

Determining the specific heat of a metal nail In this lab you will determine the specific heat of a metal nail by calculating how much heat flows out of the nail into a known quantity of water and measuring the temperature change of the water. Lab Apparatus and Materials Metal nail water Large test tube Graduated cylinder 250 mL beaker ring stand iron ring wire gauze utility clamp burner matches temperature probe crucible tongs Procedure Part I 1. Open the DataStudio software. Assign the temperature sensor to the appropriate location on the “black box”. Open both a digits display and a graphical display, and adjust the windows so both are visible simultaneously. 2. Determine the mass of the metal nail (make sure the nail is dry). Record the value in the data table. 3. Place the nail into the 250mL beaker, and fill the beaker with tap water so the nail is entirely covered with water. 4. Place the beaker with the water and nail onto the wire gauze on the iron ring, and begin to heat the beaker until boiling. 5. Meanwhile, using the graduated cylinder, add exactly 40mL of water into the large test tube. Place the test tube securely into the utility clamp. 6. Place the temperature probe into the test tube. 7. Begin collecting temperature data for the water in the test tube. Record the temperature of the water in the data table. Do not stop collecting data. 8. After the nail has been in water that is steadily boiling for at least two minutes, remove the temperature sensor from the test tube and, carefully and quickly, using the tongs, transfer the nail from the beaker to the test tube of water. Reinsert the temperature sensor into the test tube. 9. Turn off the burner. 10. Once the temperature of the water in the test tube has ceased changing, record the new temperature of the water into the data table. Part II 1. Remove the temperature sensor and nail from the test tube. Empty the test tube and refill it with 40 mL of water. Again, using the temperature probe, begin collecting temperature data for the water in the test tube. 2. Allow the nail to sit on the desktop for a minute or two so it can return to room temperature. 3. Light the burner, and, using the tongs, hold the nail directly in the flame of the burner. Try to hold the nail in an upright orientation, with as much nail in the flame as possible. Continue carefully heating the nail for 3 minutes. 4. Remove the temperature sensor from the test tube and, carefully and quickly, using the tongs, transfer the nail to the test tube of water. As quickly as possible, reinsert the temperature sensor into the test tube. 5. Turn off the burner. 6. Once the temperature of the water in the test tube has ceased changing, record the new temperature of the water into the data table. Part I and Part II Data Part I Part II Mass of nail g g Volume of water in test tube mL mL Initial temperature of test tube water ºC ºC Final temperature of test tube water ºC ºC Part I Calculations and Questions 1. Calculate T for the water in the test tube. T = __________ 2. Calculate the heat gained by the water using q = msT. Remember the specific heat of liquid water is 4.184J/gºC q = __________ 3. Where did the heat that flowed into the water in the test tube come from? 4. Assuming the initial temperature of the nail was the same as the boiling water (100ºC ) and the final T of the nail is the same as the final T of the water in the test tube, calculate the T for the nail. T = __________ 5. Using the mass of the nail, the T for the nail, and the answer from question 2 and three above, calculate the specific heat of the nail using s = q/mT. Record your answer in the proper units. s = __________ Part II Calculations and Questions 1. Calculate T for the water in the test tube. T = __________ 2. Calculate the heat gained by the water using q = msT. Remember the specific heat of liquid water is 4.184J/gºC q = __________ 3. Where did the heat that flowed into the water in the test tube come from? 4. Using the mass of the nail, the specific heat for the nail you determined in Part I, and the answer from question 2 and three above, calculate the T of the nail using T = q/ms. Record your answer in the proper units. T = __________ 5. Assuming the final temperature of the nail was the same as the final T of the water in the test tube, calculate the temperature of the nail in the flame immediately before adding it to the test tube of water. T = ____________