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Iron has a mass of 7.87g/cm^3 of volume, and the mass of an iron atom is 9.27x10^(-26)kg. If the atoms are spherical and tightly packed,

a) a) what is the volume of an iron atom? --> this one I do know how to do it, the answer is 1.18x10^29 m^3

b) what is the distance between the centers of adjacent atoms?

This one, my answer is different than the answer in the book

This was how I did it:

b) [(1.18 x 10^29 m^3) x 3/4] / pi = r^3

r= 3.04 x 10^9 m

=> the distance between the centers of adjacen atoms is 6.08 x 10^9 meters

****but the answer of the book is 0.282 nm

Would someone plz show me how to do part b of the problem? Thanks so much

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# Homework Help: What is the volume of an iron atom?

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