Chapter 12, Problem 12.47SP

The molecular structure of a scorpion toxin, a small protein, was determined by X-ray crystallography. The unit cell has angles of 90°, contains 16 molecules, and has a volume of $1.019\times {10}^2$ nm³. If the molecular weight of the toxin is3336 and the density is about 1.35 g/cm³, what percent of the unit cell is occupied by protein?