- The actual value for absolute zero in degrees Celsius is −273.15. Use the formula below to determine your percent error for both gas samples.
|experimental value – actual value| x 100
actual value
- If the atmospheric pressure in the laboratory is 1.2 atm, how many moles of gas were in each syringe? (Hint: Choose one volume and temperature pair from your data table to use in your ideal gas law calculation.)
Write a conclusion statement that addresses the following questions:
- How did your experimental absolute zero value compare to the accepted value?
- Does your data support or fail to support your hypothesis (include examples)?
- Discuss any possible sources of error that could have impacted the results of this lab.
- How do you think the investigation can be explored further?
Answer the reflection questions using what you have learned from the lesson and your experimental data. It will be helpful to refer to your chemistry journal notes. Answer questions in complete sentences.
- Why was the line of best fit method used to determine the experimental value of absolute zero?
- Which gas law is this experiment investigating? How does your graph represent the gas law under investigation?
- Using your knowledge of the kinetic molecular theory of gases, describe the relationship between volume and temperature of an ideal gas. Explain how this is reflected in your lab data.
- Pressure and number of moles remained constant during this experiment. If you wanted to test one of these variables in a future experiment, how would you use your knowledge of gas laws to set up the investigation?
