Exp 6 help

[Robert Zellmer]

I have help files for exp 6.  Look at the class web page (not Carmen).
Look at "Helpful Tidbits" and the "Laboratory" links.  You will find 
several
files and a good bit of help for this exp and what you should do with the
graphs.

I also have examples of what your graph should look like, both before
and after you've drawn your lines.  I would suggest if you are using Excel
do the whole graph except for the lines.  Print the graph and draw the 
lines
in by hand.  While it can be done, it is not easy to do best-fit lines 
for this
data and get them to come out correct.  I won't go into explaining why or
how to overcome that.  It's not necessary.

For exp 6 graphs you want the temperature on the y-axis and you want to
put that on the long side of your graph paper.  That means if you are using
Excel you need to tell it to put things in portrait mode.  See my help 
files
where I've explained this.  You want to spread out your axes as much as
possible, especially the temp. axis since that's more accurate than your
time.  If you do this correctly you will be able to gain 1 s.f. for Ti 
and Tf
obtained from your graphs.

I often get a lot of questions about the mass of NaOH in part B.
You calculate the mass of NaOH from the volume of NaOH (10.00 mL)
and the density (given in the discussion section on page 49).

*Exp 6 - Using Excel for Exp 6* 
<http://chemistry.osu.edu/%7Erzellmer/chem1250/faq/exp6_excel.txt>

*Exp 6 - Example of a decent graph* 
<http://chemistry.osu.edu/%7Erzellmer/chem1250/lab/exp6_partA_graph.pdf>

*Exp 6 - Example of a decent finished graph with best-fit lines* 
<http://chemistry.osu.edu/%7Erzellmer/chem1250/lab/exp6_partA_finished.pdf>


Dr. Zellmer

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