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I always get questions about exp 7 and what should be in the
notebook<br>
and whether there is a report. You will be doing a computer
simulation<br>
for part of the lab and taking data for part of it. Bring your
laptops if<br>
you have one. I don't think this will work on the iPads. The TA
will<br>
divide you into groups.<br>
<br>
All information collected for both the Part 1 (simulation) and Part
2<br>
(experimental) goes in the notebook. While you will be working in<br>
groups each of you should be writing all the information in your own<br>
notebook in your own words.<br>
<br>
The notebook and report consists of several parts.<br>
<br>
<b>NOTEBOOK</b>:<br>
<br>
<big><font size="2"><big><big><font size="2"><big>The purpose should
be in the notebook (try to condense the objectives<br>
into 2-3 sentences). </big></font></big></big></font></big><br>
<br>
<b>Part 1 (simulation part)</b>:<br>
<br>
You don't need to put the whole procedure for the simulation in your<br>
notebook. Just put in the titles for each subsection (Part 1,
Quantized<br>
Energy and Photons, Line Spectra, etc.) and the tables for each of
those<br>
subsections from <b>pages 51-62 </b>(i.e. the tables corresponding
to these<br>
subsections). You will record your "data" and observations from the<br>
simulation in these tables. Answer ALL questions posed in the manual<br>
(write answers in the <b>notebook</b>) and fill in all the tables
shown in the<br>
manual in your <b>notebook </b>(even though some of them state to
answer<br>
them in the report, the notebook pages are being considered part of<br>
the report so you don't have to repeat them - see below).<br>
<br>
<b>Part 2 (starting on page 62 - experimental part)</b>:<br>
<br>
Write out the procedure as usual. The tables on page 63 should be<br>
included in the notebook. In lab you will record the color,
relative<br>
intensity and scale readings for both H and He. For the H spectrum<br>
you get the wavelengths from the simulation for the experimental<br>
spectrum and the Bohr model (table on page 58 which should be in<br>
the notebook). The yellow line in table 7.1 is from the bulb used
to<br>
light up the scale. Record that as well. Each of you have to look
at<br>
the H and He spectra and record the information. Make sure the<br>
same spectroscope is used for H and He.<br>
<br>
<br>
<b>REPORT</b>:<br>
<br>
This is done individually. <b>NO GROUP work</b>!!!<br>
<br>
There is no "formal" report. You will turn in the notebook pages
before<br>
leaving lab as usual. This will count as part of the grade.<br>
<br>
<font color="#ff0000">For this report there is a <b>report template
</b>on <b>Carmen </b>which has the tables<br>
on page 63 and pages 65-68. You <b>MUST </b>use this template
for the report.<br>
<b>NO </b>scans or pictures of these pages will be accepted.<br>
</font> <br>
Insert a cover page (as usual) and fill in the tables in the
template (pages 63<br>
and 65-68). You can use Excel to make the tables on page 63 and
replace<br>
those tables in the report template or you can simply type your
numbers<br>
directly into the tables. I would suggest using Excel for at least
Table 7.2<br>
so you can have it do the calculations using the equation you get
from the<br>
calibration curve (explained on page 64).<br>
<br>
Include the graph for the H spectrum. You don't need a purpose,
procedure,<br>
discussion section (unless you need to discuss some sort of errors
for the data<br>
you collected in part 2 and your graph) or conclusion section.
There is one<br>
sample calculation using the eqn. generated from your calibration
graph to<br>
calculate a single wavelength for the He spectrum.<br>
<br>
For the <b>graph (calibration curve</b>):<br>
<br>
You need to make a calibration curve to relate your scale readings
to<br>
wavelength. You use the H spectrum to do this.<br>
<br>
Look on page 64 (top of page) for an explanation. You graph
wavelength<br>
versus scale reading. It should be a smooth curve (not a linear
fit). If using<br>
Excel it will give you an eqn. relating wavelength to scale reading
(based on<br>
your H spectrum) which you can use to calc. the wavelengths for He
by<br>
substituting the scale readings for He. An easy way to do this
would be to<br>
make Table 7.2 on page 63 in Excel (at least the scale readings) and
program<br>
your eqn from the calibration curve into the table. You have to
show one<br>
sample calc. on how you get a wavelength from scale reading for He.<br>
Make sure your graph follows the rules for making a good graph.<br>
<br>
<b>Summary of Report:</b><br>
<br>
Report template with added cover page (<b>MUST </b>use the
template on Carmen)<br>
Calibration curve<br>
Sample calculation<br>
<br>
<b>Pre-lab and Post-lab</b>:<br>
<br>
There is an on-line pre-lab quiz. <br>
There is no post-lab quiz or data-entry.<br>
<br>
Please go to the following link for questions about exp 7, the
notebook,<br>
procedure, the link to the simulation, etc.<br>
<br>
<a
href="http://chemistry.osu.edu/%7Erzellmer/chem1250/lab/lab_1250.htm"><b>Laboratory</b></a><br>
<br>
Dr. Zellmer
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