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As always, before attempting the pre-lab you should read the
Discussion<br>
section and review the calculations. Write the procedure so you
have some<br>
idea where the numbers are coming from. Watching the video at home<br>
before writing the procedure will help. It will give you better
idea of what's<br>
going on so the procedure makes sense. The procedure MUST be
written<br>
in your own words in an outline form similar to my example on the
last<br>
page of the syllabus (and found at a <a
href="http://chemistry.osu.edu/%7Erzellmer/chem1250/lab/notebook_proc.pdf">link
</a>on my class web page). Pay<br>
attention to the equations and the examples in the manual since the<br>
calculations you'll be doing are very similar.<br>
<br>
The pre-lab essentially consists of two parts. The first part
starts with<br>
a video, which you need to watch all the way through (including the<br>
credits) or you will have have points deducted. Then there is a
series<br>
of questions dealing with the discussion and procedure in the manual<br>
and the video. <br>
<br>
Below this part is the data-entry part of the pre-lab. You'll be
given<br>
numbers similar to what you'll obtain in the actual experiment. You
will<br>
then do the appropriate calculations and enter the numbers (make
sure<br>
you have the correct sig. fig.). That's pretty much it. <br>
<br>
There is an INSTRUCTIONS button in a red box toward the upper-left
of<br>
the page. Pay attention to what it's telling you to do in terms of
units, how<br>
to enter the numbers, etc. If submitted correctly, the program will
display<br>
a summary page with all your data and the correct numbers displayed
and<br>
send you an e-mail. If you don't get these two things something may
have<br>
gone wrong and you should try again. If it did work it won't let
you do it<br>
again.<br>
<br>
<b>I'll be sending a follow-up e-mail shortly after this one with
more details.</b><br>
<br>
The link for the pre-lab is in the syllabus, on Carmen and my web
page so <br>
if the following doesn't seem to work from your e-mail you can find
it <br>
somewhere. <br>
<br>
<a
href="https://undergrad-ed.chemistry.ohio-state.edu/cgi-test/gc-freezing-pt-depression.pl">
<a class="moz-txt-link-freetext" href="https://undergrad-ed.chemistry.ohio-state.edu/cgi-test/gc-freezing-pt-depression.pl">https://undergrad-ed.chemistry.ohio-state.edu/cgi-test/gc-freezing-pt-depression.pl</a>
</a><br>
<br>
<br>
Dr. Zellmer <br>
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