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<div class="moz-cite-prefix">On 06/30/13 14:02, wrote:<br>
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<p>Dr. Pounds,</p>
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<p>On quiz #2, Question 1.b (partial pressure) You found the
mole fraction based on volumes.. can you explain that a little
more for me please, I am not exactly sure how you found that
value to be 0.209476..</p>
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<p>Thanks,</p>
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Based on Avogadro's Law (look at lecture slide 15 from Chapter 11)
the volume of a gas is proportional to the number of gas molecules
(or moles). Based on that fact, I could simply look at the volume
percentage for Oxygen (20.9476) to come up with the mole fraction of
Oxygen in the mixture. Converted to a fraction that is 0.209476.<br>
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<pre class="moz-signature" cols="72">--
Andrew J. Pounds, Ph.D. (<a class="moz-txt-link-abbreviated" href="mailto:pounds_aj@mercer.edu">pounds_aj@mercer.edu</a>)
Professor of Chemistry and Computer Science
Mercer University, Macon, GA 31207 (478) 301-5627
<a class="moz-txt-link-freetext" href="http://faculty.mercer.edu/pounds_aj">http://faculty.mercer.edu/pounds_aj</a>
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