Gold Crystallizes in a Face-Centered Cubic Lattice

Multiple Choice

Gold crystallizes in a face-centered cubic lattice. How many unit cells are there in a gold sample whose mass is 1.50 grams? The atomic weight of gold is 196.97 g mol^-1.Hint: Use dimensional analysis and the number of atoms per unit cell.

A) 1.15 × 10²¹ unit cells
B) 2.29 × 10²¹ unit cells
C) 3.28 × 10²⁰ unit cells
D) 4.58 × 10²¹ unit cells
E) 9.17 × 10²¹ unit cells