Iron pyrite (FeS₂) is known as fool’s gold because of its resemblance to gold metal. However, it can easily be distinguished from gold by the difference in their densities. The density of gold is 19.28 g · cm^–3 and that of fool’s gold is 5.01 g · cm^–3. What volume of fool’s gold would have the same mass as a piece of gold of volume 4.0 cm³?