The density of solid Cr is 7.15 g/cm3. How many atoms are present per cubic centimeter of Cr?As a solid, Cr adopts a body-centered cubic unit cell. How many unit cells are present per cubic centimeter of Cr?

Question

aaronq · Answer

in one cubic cm there is 7.15 grams

convert to moles.. then to atoms..

this is how many atoms there is in one cm cubed.

How many atoms are there in a body-centered cubic unit cell?

divide the number of atoms in one cm cubed by the number in one unit cell