A metal crystalizes in a face-centered cubic lattice with a unit cell edge of 407pm. the density is 10.6g.cm^3, determine molar mass in grams.

since its an FCC there are 4 atoms.
i know to start with 10.06= 4(mass) / Volume

Question

A metal crystalizes in a face-centered cubic lattice with a unit cell edge of 407pm. the density is 10.6g.cm^3, determine molar mass in grams.

since its an FCC there are 4 atoms.
i know to start with 10.06= 4(mass) / Volume

anonymous · Answer

and i know i have to multiply by 6.022x10^23 to get g/mol

aaronq · Answer

4 atoms for every 407 pm, what volume does 1 mole of atoms take up?

after you find the volume, multiply by the density.