Answer
One AMU is defined as 1/12 of the mass of a carbon-12 atom. So, an atom of gold weighs 197 times 1/12 of the mass of a carbon-12 atom since it is 197 AMU.
Work Step by Step
One AMU is defined as 1/12 of the mass of a carbon-12 atom. So, an atom of gold weighs 197 times 1/12 of the mass of a carbon-12 atom since it is 197 AMU.