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# Iron has a body centred cubic unit cell with a cell edge of 286.65 pm. The density of iron is 7.87 g $cm^{−3}$. Use this information to calculate Avogadro's number (At. mass of Fe = 56 $g mol^{-1}$)

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## 1 Answer

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$6.04\times 10^{23}$
Hence (A) is the correct answer.
answered Jun 2, 2014