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I've always get questions about sig. fig., rounding (whether<br>
I use the special "round even" rule, etc.). I have several links I<br>
use for 1250, 1210 and 1220 dealing with these topics. You<br>
will find 1220 links at the "Helpful Tidbits" link for Chem 1220,<br>
<br>
<a
href="http://www.chemistry.ohio-state.edu/%7Erzellmer/chem1220/faq/faq_1220.htm"><b>Helpful
Tidbits for 1220</b></a><br>
<br>
I use the round-even rule when getting rid of an exact 5 or 5
followed<br>
by zeros, such as rounding 1.85 to the tenths place. You are
dropping<br>
the "5". The number being rounded is exactly halfway between the
two<br>
numbers so there's no reason to always round up. However, you don't<br>
really need to worry if you didn't do this in 1210. Even if you
don't<br>
do this it should not affect you getting the correct answers on the
exams<br>
or losing points on the quizzes or labs. Actually, if you use Excel
to do<br>
your calculations and the report sheets you can't use this rule
(Excel<br>
doesn't have a function to do this easily).<br>
<br>
You still may find these files useful, especially if you don't
remember<br>
sig. fig. rules or had trouble with them the first time around.<br>
<br>
There's also a link dealing with s.f. for logarithms which you will
need<br>
to understand for several experiments and lecture material. You
should<br>
make sure you understand this before exp 3 (DRL). Sig. fig. for
logs can<br>
be tricky at first but are easier than you think.<br>
<br>
These are just some of the useful links there and I may be adding
more<br>
(if I do I'll let you know). Take a look. Also, take a look at the
one for<br>
1210, which has additional links for first semester chemistry.<br>
<br>
<a
href="http://www.chemistry.ohio-state.edu/%7Erzellmer/chem1210/faq/faq_1210.htm"><b>Helpful
Tidbits for 1210</b></a><br>
<br>
Dr. Zellmer
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