Length(a) of an edge of fcc is squareroot of 8 of r, so (1.43a)(sq.root of 8) 4.045aLet's use a as the unitDensity is ( of atoms)(atomic weight) / (Vol.of the atom)(Avogadros)Cube the length of the edge to get the volume of atom66.184a^3/unit cellNow we all know the values we need; of atoms4 atoms/unit cell since it's fcc, atomic weight of aluminum26.98 g/mol, volof atom66.184a^3/unit cell, and the avogadros6.022x10^23 atom/mol, we can now solve for the densityYou should get an answer with a unit of g/a^3.
Couple of ways you can do thisin the huck is onesoak your corn in the husk in salted water for about 30 minutes and you can do on grill (medium high heat) turning often till husks start to get dark brown, or in the oven at 375 degree's for about 30 + minutes ,turning them a couple of times to brown all sidesOther way is out of huskpull off some aluminum foil, lay husked ear and lay on center, brush or coat with a herbed butter blend ( soften some butter and add some of your favorite herbs) I like garlic and dill or rosemary and thymeCoat each ear well, and then seal up in the foil, this will cook the corn in the butter sauce adding a whoel bunch of flavorSame temps and methods applyGood luck
