Calculate the value of Avogadro's number from the following data: Density of \( \mathrm{KF}=2.48...

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Calculate the value of Avogadro's number from the following data:
Density of \( \mathrm{KF}=2.48 \mathrm{~g} \mathrm{~cm}^{-3} \).
Distance between \( \mathrm{K}^{+} \)and \( \mathrm{F}^{-} \)in \( \mathrm{KF}=269 \mathrm{pm} \) (At mass \( \mathrm{K}=39, \mathrm{~F}=19 \mathrm{amu} \) )
\( \mathrm{P} \)
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