Question

Iron has a body centred cubic unit . Density of iron is 7.87g/cm3 . Use this information to calculate the Avogadro number. (Fe = 56.0 u)​

Answer 1

Answer:  

6.04×10^23

Iron has a body-centred cubic unit cell with a cell edge of 286.65 pm. The density of iron is 7.87g cm^–3. Iron has a body-centred cubic unit cell with a cell edge of 286.65 pm. The density of iron is 7.87g cm–3

For BCC unit cell of the element Fe, Z=2

N0=Z×Ma3×ρ=2×56gmol−1(286.65×10−10cm)3×(7.87gcm−3)=6.04×1023mol−1 =  

6.04×10^23

Hope it helps u !!