[CHM 111] Lab Questions

[Andrew J. Pounds]

On 11/18/2015 07:15 PM,  wrote:
> Good evening, Dr. Pounds!
>
> I just had two quick questions about the lab: 1. How many significant 
> figures would you like our data to be (if it matters)? I just noticed 
> I had a couple of weird ones so I took them all to four.

You used the Analytical balance, which gave you five sig figs and then 
you used volumetric glassware which by default it 4 sig figs. Since you 
are generally doing multiplication/division work, you should go with 4 
sig figs.

> 2. For the last question on the lab, would you just multiple (M of 
> unknown)(0.05 L of unknown)(Molar mass of Ni) in order to get the 
> grams of the Ni ion?
>
> Thanks!
>
>
Sounds right to me.

-- 
Andrew J. Pounds, Ph.D.  (pounds_aj at mercer.edu)
Professor of Chemistry and Computer Science
Mercer University,  Macon, GA 31207   (478) 301-5627
http://faculty.mercer.edu/pounds_aj

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