lab 10 su19

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Title page

  • Name, date, experiment number, experiment title

that’s for lab 10 I attached the manual find it in page 95-

and I’m already done with the calculation but I will attached for the discussion

Objective

  • Write all objectives of this experiment. Use complete sentences. What is the purpose of Part A of the experiment? What is the purpose of Part B?

Introduction

  • Include the following in your introduction. Write in complete sentences with developed paragraphs. Organize so there is a logical flow of ideas.
    • What is calorimetry? What is a calorimeter?
    • What is heat capacity? What is specific heat? What is the difference between heat capacity and specific heat? Write the equations that define them. Define the variables.
  • Give a brief introduction about how the objectives will be met. This should include the balanced chemical equations for all reactions conducted and Hess’s Law analysis (manipulation of the equations that shows how the sum of the steps of reactions in this experiments equals the target reaction for this experiment).
  • Discussion
    • Report your findings. Be quantitative
      • Report heat capacity of the calorimeter
      • Report the enthalpy of formation for MgO.
      • Report your percent error.
    • Discuss the precision of the heat capacity for the calorimeter. Remember to be quantitative.
    • Discuss the accuracy of the LaTeX: Delta H_f

      Δ



      H


      f


      for Mg obtained from the thermistor. Remember to be quantitative.

    • Discuss the difference between enthalpy of reaction and enthalpy of reaction per mole? Discuss which might be expected to change from one trial to the next? Discuss which should remain the same from one trial to the next? For which value is it appropriate to report an average value, enthalpy of reaction or enthalpy per mole?
    • What was the recorded boiling point and freezing point of water? How would a lower or higher than expected value affect the other calculations in this experiment?
    • Discuss sources of error
      • Report your %error. Explain plausible sources of error that explain the error in YOUR experiment. If your error was poor, points may be deducted, especially if you do not report plausible reasons for the error. Remember human error and errors in calculation are not valid sources of error.
      • If you did not have significant error, discuss general sources of error for this experiment.
    • ConclusionWrite a conclusion for your report. Be quantitative. Remember to report your major results, especially in relation to the objective.
 
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