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Chemistry

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KF has the same type of crystal structure as NaCl. The unit cell of KF has an edge length of 5.39 Å. Find the density of KF in g/cm3

  • Chemistry -

    You probably know the edge length for NaCl but I do not.

    mass of NaCl molecule = molecular mass of NaCl/6*10^23
    mass of KF Molecule = molecular mass of KF/6*10^23

    density of KF = length of KF^3/length of NaCl^3 * (Mass of KF/Mass of NaCl)

    note Avagadro's number cancels

  • Chemistry -

    Oh, times density of NaCl of course

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