[CHM 112] CHM 112.003 Homework Problems

[Andrew J. Pounds]

On 02/10/2015 06:40 PM, wrote:
>
> I am reworking some of the homework problems, and I got to number 40 
> in chapter 10, and my answer is 64.58mL, but the answer online is 
> 70.7mL. You worked it by solving for the moles, then doing PV=nRT, and 
> I used P1V1=P2V2. Would that explain the 6mL difference?
>
>
>

Using $P_1V_1=P_2V_2$ assumes constant temperature and number of moles.  
In this case the temperature is changing too -- so use the last set of 
measurements to determine the number of moles and then find the volume 
for the first set of measurements.

-- 
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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