[CHM 112] Burdge Question

[Andrew J. Pounds]

On 01/15/14 11:18,  wrote:
> Hello Professor Pounds,
>
> In your solution to number 58 in Chapter 10 of Burdge, I'm curious on 
> what the purpose of finding the Molar mass of the unknown compound 
> would be? Is F2P the molecular formula of the compound?
> Thank you!
>

$\mathrm{PF_2}$ is the empirical formula.  The problem asks for the 
molecular formula.  The molar mass lets me determine how many units of 
the empirical formula are necessary to make up the molecular formula. In 
this case the molecular formula would be $\mathrm{P_2F_4}$ -- with a 
mass of 138 g/mol.  Got it?

-- 
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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