Wednesday, January 19, 2011

Moon read & finish analysis for % oxygen lab

Even day classes, due 1/21/2011  Odd classes due 1/24/2011
Read p 753-767




Finish answering the analysis questions from the lab if you did not finish in class today.
Analysis Questions
  1. Show your calculations for % O2
  2. How does your table’s % O2 compare to the accepted value?  And the class average?
  3. What are potential errors in this experiment and how might they affect your results?
  4. Would using a larger jar or candle change your results?  Explain
5.      "As the altitude of an area increases, the density of the atmosphere decreases." How can this statement be used to explain why it is more difficult to breathe in Denver, which has an altitude of more than 1500 meters, than in Houston, which is at sea level?
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