White (colorless) diamonds are composed of pure carbon in a solid lattice. Some diamonds found in nature are observed to have a color, which comes from a trace impurity in the lattice. In blue diamonds, the color comes from the replacement of a carbon atom with a boron atom in the lattice. A. (4 points) If one out of every 1000 carbon atoms is replaced by a boron atom, what is the percent by mass of boron in a blue diamond? B. (2 points) What is the empirical formula for the diamond described above?