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Iron has a body-centred cubic unit cell ...

Iron has a body-centred cubic unit cell with a cell dimension of 286.65 pm. The density of iron is `7.874g*cm^(-3)`. Use the information to calculate Avogadro's number. (At. Mass of Fe = 55.845 u).

Text Solution

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`rho=(ZxxM)/(Nxxa^(3))or,N=(ZxxM)/(rhoxxa^(3))=(2xx55.845)/(7.874xx(2.8665xx10^(-8))^(3))`
`=6.022xx10^(23)mol^(-1)`
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