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## Homework Statement

Express the van der Waals equation of state as a virial expansion in powers of 1/V

_{m}and obtain expressions for B and C in terms of the parameters a and b. The expansion you will need is

(1-x)

^{-1}= 1 + x + x

^{2}+ ...

Measurements on argon gave B = -2.17 cm

^{3}mol

^{-1}and C = 1200 cm

^{6}mol

^{-2}for the virial coefficients at 273 K. What are the values of a and b in the corresponding van der Waals equation of state?

## Homework Equations

van der Waals equation: p = nRT/(V-nb) - a(n/V)

^{2}

## The Attempt at a Solution

Not sure how to approach this...

Thanks! This pset is due tomorrow morning so please help! :(