p = n x Mr / Vc x NA
where n is the atoms/unit cell e.g. fcc packing n = 4 and for bcc packing n = 2
Mr is the Atomic Mass in g/mol
Vc is the volume/unit cell cm3 = a3 where a can be found by the radius of the atom and the packing used. e.g in bcc packing it is "a = 4r/1.732" . In Fcc packing it is "a= sin (4r)" or "a = cos (4r)"
NA is avorgados constant, = 6.023 x1023
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density = mass/volume
The shape of an object is not enough to calculate its density. You also need its mass and then Density = Mass/Volume.
Bulk density = dry weight / volume, then by knowing the dry weight and bulk density we can calculate the volume.
Density is found when you divide the mass and the volume.
calculate density of sponge ?