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Your tables need to have units and the correct number of s.f.
I’ve explained in the “Helpful
Tidbits” section of the class web page how to do this (by formatting the cells).
You will need to
use scientific notation for the 1/[Cr
3+
].
Please look at the following link,
Exp 17  Help for Exp 17
.
If you set the numbers in your tables to the correct number of s.f. this
will transfer to your graphs.
The s.f. for the time axis depend on how accurately you measured
your times but probably will have 2 s.f.
The unit for time depends on how you reported it in your
tables.
Most of the times since you read and reported it in minutes that’s what it is on the graph.
The following are examples of what a good graph should look like.
I’ve used the ZeroOrder
graph as an example and took someone’s data for the graph.
In Excel set the top/bottom margins
on the page to no more than 0.5 inches and the left/right margins to about 0.25 inches.
This will
allow maximum coverage on your paper when the graph is printed.
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 Winter '07
 WOODWARD
 pH

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