Exp 6 help

[robert zellmer]

Exp 6 starts this Tuesday.

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 will go over in class what to do in Part A for determining the
heat capacity of the coffee cup.  I also describe this at the "Laboratory"
link.  The TAs will discuss some of this as well in lab.

I also have examples of what your graph should look like, both before
and after you've drawn your lines.  You can draw the lines by going to
"Insert" and "shapes" and there's a line-drawing tool.  This line can be
manipulated so you can get a pretty good best-fit line, probably better
than one you would draw by hand.  If you can't figure out how to do
this in Excel do the whole graph except for the lines.  Print the graph and
draw the lines in by hand.  Then scan the graphs to include them in the
report.  While it can be done, it is not easy to do best-fit lines for this
data and get them to come out correctly.  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. The default in
Excel is Landscape, which is usually the better graph mode and what we 
really
want for all exps except for this exp for which you want to use *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.  You need lots of grid lines because you will be reading the 
T_i and T_f
from the graph.  If you do this correctly you will be able to gain 1 
s.f. for T_i and
T_f  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 data analysis section on page 39 of the manual).

*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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