College Chemistry

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I think this should be easy but im stuck. Please help:

Suppose a compound could point in any of two directions in the solid and still have the same energy. How many molecules would there be if the total entropy of a solid sample of this compound was 8.174e-9J/K
I used S= klnW and got lnW = 5.92e14. How do i get the number of molecules from here?

  • College Chemistry -

    W = 2ⁿ , where n = number of molecules

    lnW = n • ln2 = 5.921 × 10¹⁴ ⇒
    n = 8.542 × 10¹⁴ molecules

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