he atomic radii of In and Sb atoms are approximately 1.44 A and 1.36 A, re- spectively. Using the hard-sphere approximation, find the lattice constant of InSb (zinc blende structure), and the volume of the primitive cell. What is the atomic density on the (110) planes? (Hint: The volume of the primitive cell is one-fourth the fee unit cell volume.)

po-215 i got it right on the quiz

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".