<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
Exp 6 is this week.<br>
<br>
I have help files for exp 6. Look at the class web page (not
Carmen). <br>
Look at "Helpful Tidbits" and the "Laboratory" links. You will find
several <br>
files and a good bit of help for this exp and what you should do
with the <br>
graphs. I went over in class what to do in Part A for determining
the<br>
heat capacity of the coffee cup. I also describe this at the
"Laboratory"<br>
link. The TAs will discuss some of this as well in lab.<br>
<br>
I also have examples of what your graph should look like, both
before <br>
and after you've drawn your lines. You can draw the lines by going
to<br>
"Insert" and "shapes" and there's a line-drawing tool. This line
can be<br>
manipulated so you can get a pretty good best-fit line, probably
better<br>
than one you would draw by hand. If you can't figure out how to do<br>
this in Excel ask the TAs or me. While it can be done, it is not
easy to<br>
do best-fit lines for this data and get them to come out correctly.
I won't<br>
go into explaining why or how to overcome that. It's not necessary.
<br>
<br>
For exp 6 graphs you want the <b>temperature </b>on the <b>y-axis
</b>and you want to <br>
put that on the <b>LONG side </b>of your <b>graph paper</b>.
That means when using <br>
<b>Excel </b>you need to tell it to put things in <b>PORTRAIT </b>mode.
The default in<br>
Excel is Landscape, which is usually the better graph mode and what
we really<br>
want for all exps, except for exp 6. For this one you want to use <b>PORTRAIT</b><br>
mode. See my help files where I've explained this. You want to
spread out your<br>
axes as much as possible, especially the temp. axis since that's
more accurate than<br>
your time. You need lots of grid lines because you will be reading
the T_i and T_f<br>
from the graph. See my example graph. If you do this correctly you
will be able<br>
to gain 1 s.f. for T_i and T_f obtained from your graphs. <br>
<br>
You are NOT to take a scan or picture of the graphs and put them in
the report.<br>
They will be given zero credit.<br>
<br>
I often get a lot of questions about the mass of NaOH in part B.
You<br>
calculate the mass of NaOH from the volume of NaOH (10.00 mL) and<br>
the density (given in the data analysis section on page 39 of the
manual). <br>
<br>
<a
href="https://www.asc.ohio-state.edu/zellmer.1/chem1250/faq/exp6_excel.txt"><b>Exp
6 - Using Excel for Exp 6</b></a><br>
<br>
<a
href="https://www.asc.ohio-state.edu/zellmer.1/chem1250/lab/exp6_partA_graph.pdf"><b>Exp
6 - Example of a decent graph</b></a><br>
<br>
<a
href="https://www.asc.ohio-state.edu/zellmer.1/chem1250/lab/exp6_partA_finished.pdf"><b>Exp
6 - Example of a decent finished graph with best-fit lines</b></a><br>
<br>
<br>
Dr. Zellmer
</body>
</html>