measuring percent oxygen in air
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Title: measuring percent oxygen in air

Essay Details:

Subject: Science
Author: Christine H
Date: July 11, 2011
Level: University
Grade: A
Length: 3 / 798

Essay text:

The conclusion of the test suggested that the concentration of oxygen in the lab at the time of the experiment was around 20%. METHOD: The method for this experiment was to take advantage of oxygen's chemical reactivity with Iron. A piece of steel wool was placed in a test tube which was inverted in water. As the oxygen in the tube reacted with the steel wool the volume of air decreased in the tube until all the oxygen had reacted to form rust. The change in volume of air could then be determined to calculate the percent of O2 originally present. RESULTS: First Trial ? Coarse Steel Wool 1...

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