One mol of atoms of any element always contains 6.022 * 10^23 atoms. So one mol of gold atoms will contain 6.022 * 10^23 gold atoms. We can determine the number of moles using this equation:
8.458 * 10^24 gold atoms * 1 mol of atoms/(6.022 * 10^23 atoms) = 14.04 mol of gold atoms.
Answer: there are 14.04 moles of gold atoms in the ring.