Posted by tweety on Saturday, February 21, 2009 at 6:03pm.
There are two Li atoms per unit cell for a bcc structure.
mass = 2*massofmole Li/6.022 x 10^23 = mass of unit cell. You know the volume.
density = mass/volume.
Note that the problem asks for density in g/cc so you must change the volume in liters to cc in order to obtain the unit g/cc.
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