9. Using a test tube holder, lift the test tube containing the heated metal shot from the boiling water bath and quickly, yet carefully, pour the metal shot into the calorimeter. Make sure no hot water from the outside of the test tube drips into the calorimeter. 10. Gently stir the water and metal shot in the calorimeter. Measure and record the highest temperature the mixture reaches. Record this temperature in the data as the final temperature of mixture. 11. Drain the water out of the calorimeter and pour the metal shots onto paper towels. Pat the metal dry thoroughly. Dry the calorimeter. 12. Clean, dry, and return all equipment. OBSERVATIONS AND DATA: 1. Mass of the metal ________________g 2. Volume of water in the calorimeter ________________mL 3. Initial temperature of water in calorimeter ________________°C 4. Initial temperature of the metal ________________°C 5. Final (highest) temperature of the water in the calorimeter ________________°C CALCULATIONS: Show your work and include a short explanation with each calculation. 1. Calculate the temperature change of the water. 2. Calculate the temperature change of the metal. 3. Calculate the amount of energy absorbed by the The specific heat (cp) of pure 4.18 J/g°C, and the density of the water is 1.00 g/mL. 4. We assume that the energy absorbed by the water is equal to the energy lost by the metal. Calculate the specific heat of the metal. Identify the metal. 5. Use the value of the specific heat of the metal, given by your teacher, calculate your % error. (% error = ((real value experimental value)/ real value)*100, make the % a – positive number if it is negative) Conclusion In your conclusion describe three sources of experimental error, and the effect that each have on the magnitude of the specific heat calculated from your experimental results. What you need to turn in - EVERYONE Pre Lab Summarized Procedure Answers to the 4 pre lab questions Data Calculations Answers/Calculations for the 5 questions. Conclusion
9. Using a test tube holder, lift the test tube containing the heated metal shot from the boiling water bath and quickly, yet carefully, pour the metal shot into the calorimeter. Make sure no hot water from the outside of the test tube drips into the calorimeter. 10. Gently stir the water and metal shot in the calorimeter. Measure and record the highest temperature the mixture reaches. Record this temperature in the data as the final temperature of mixture. 11. Drain the water out of the calorimeter and pour the metal shots onto paper towels. Pat the metal dry thoroughly. Dry the calorimeter. 12. Clean, dry, and return all equipment. OBSERVATIONS AND DATA: 1. Mass of the metal ________________g 2. Volume of water in the calorimeter ________________mL 3. Initial temperature of water in calorimeter ________________°C 4. Initial temperature of the metal ________________°C 5. Final (highest) temperature of the water in the calorimeter ________________°C CALCULATIONS: Show your work and include a short explanation with each calculation. 1. Calculate the temperature change of the water. 2. Calculate the temperature change of the metal. 3. Calculate the amount of energy absorbed by the The specific heat (cp) of pure 4.18 J/g°C, and the density of the water is 1.00 g/mL. 4. We assume that the energy absorbed by the water is equal to the energy lost by the metal. Calculate the specific heat of the metal. Identify the metal. 5. Use the value of the specific heat of the metal, given by your teacher, calculate your % error. (% error = ((real value – experimental value)/ real value)*100, make the % a positive number if it is negative) Conclusion In your conclusion describe three sources of experimental error, and the effect that each have on the magnitude of the specific heat calculated from your experimental results. What you need to turn in - EVERYONE Pre Lab Summarized Procedure Answers to the 4 pre lab questions Data Calculations Answers/Calculations for the 5 questions. Conclusion
Coffee%20Cup%20Calorimeters%20Lab.docx