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Derivation of the equilibrium saturation ratio equation?

  1. Oct 5, 2012 #1
    1. The problem statement, all variables and given/known data

    S=1+(a/r)-(b/r^3)

    2. Relevant equations

    need to find r=sqrt(3b/a) and S=1+ sqrt((4a^3)/(27b))) from a derivation of the above formula in #1.

    3. The attempt at a solution

    0=(3b/r^4) - (a/r^2)
     
  2. jcsd
  3. Oct 5, 2012 #2

    Ray Vickson

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    Science Advisor
    Homework Helper

    So, what is preventing you from solving this equation?

    RGV
     
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