Stuck on this question for a long time

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The discussion centers on a homework question about calculating the molar volume of methane at 300K, specifically regarding an unstated approximation in Example 2.4 from a textbook. Participants suggest that the approximation likely involves assumptions about molecular interactions, implying that the ideal gas law may not be sufficient. It is recommended to use the Van der Waals equation for a more accurate calculation. Access to the textbook is also mentioned as a potential barrier for some users. The conversation highlights the importance of understanding molecular interactions in gas behavior.
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Homework Statement


http://books.google.ca/books?id=iND...esult&ct=result&resnum=4#v=onepage&q=&f=false

The question is regarding Example 2.4, at the above link.
The question to find out what the unstated approximation is in that example. and re-calculate the answer w/o the approxiamtion.

Homework Equations


Virial equation
Ideal gas equation


The Attempt at a Solution


i'm thinking it's something to do with the molecular interactions? I'm so confused...
 
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it assumed no molecular interactions? I would need to use the Van der waals equation to calculate molar volume?
 
page won't let me read it
 
burningbend said:
page won't let me read it

Really, it works for me. I found it using google books - book title: Physical Chemistry for the biosciences by Raymond Chang
 
are you on a college campus? that might be why
 
Thread 'Confusion regarding a chemical kinetics problem'

Thread 'Confusion regarding a chemical kinetics problem'

TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
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