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This is a reminder there is post-lab data entry for exp 14 that must<br>
be completed by the report due date. Enter the data for <font
color="#ff0000"><b>YOUR<br>
</b></font>compound only. Do <font color="#ff0000"><b>NOT</b></font>
enter the data for any other compound.<br>
Check to make sure you are entering the correct data. Once it is<br>
submitted that is the data which is graded. We don't reset the data<br>
if you make a mistake.<br>
<br>
My advice is to get all your calculations done (use Excel). Check<br>
your numbers to make sure everything is okay (you need to do<br>
sample calc. anyway). Then go on line and do the post-lab. If<br>
you've calculated everything correctly it should be a fairly simple<br>
straightforward matter of typing your numbers in from your Excel<br>
file or report sheet. <br>
<br>
Also, remember there are two boiling points. You find the normal<br>
b.p. (VP of 760.0 mm Hg) for all three compounds in the CRC.<br>
You also measured the b.p. for your compound on that particular day<br>
in lab at the prevailing atmospheric pressure in the lab which you<br>
read from the barometer (not likely to be 760.0 mm Hg). Make sure<br>
you read the stuff I've sent and on my web page about s.f. for<br>
Ps from eqn 6 and how that translates to s.f. in the ln(Ps). You
don't<br>
use eqn 6 for the boiling points.<br>
<br>
If you didn't save my e-mails you can find them on my class web
page.<br>
You should have done this before the pre-lab.<br>
<br>
This program is the same as the one you used for exp 5 (you used<br>
same link for the exp 14 pre-lab). You can find the link on Carmen,<br>
my web page and the syllabus.<br>
<br>
You must use <font color="#ff0000"><b>Firefox</b></font>. It is
the most robust one in terms of how it<br>
works with these programs. I'm sure it has it's own quirks but<br>
the programs were tested pretty thoroughly using Firefox. I know<br>
certain errors are caught when using Firefox which aren't caught<br>
in other browsers. For instance, accidentally leaving a numeric<br>
field blank will be caught by Firefox and it will give you the<br>
opportunity to go back and fix it. Chrome on the other hand will<br>
treat a blank numeric field as a zero and blindly continue on.<br>
Of course this will be a problem for you.<br>
<br>
Dr. Zellmer
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