Question

A golden bar of metal ​(5 centimeters by 19 centimeters by 4 ​centimeters) being transported by armored car is suspected of being​ fake, made from a less valuable metal with a thin coating of pure gold. The bar is found to have a mass of 3.2 kilograms. If the specific gravity of gold is 19.3 ​, is the bar​ fake? Justify your answer. LOADING... Click the icon to view the conversion table. LOADING... Click the icon to view the density of water. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. The bar is fake because the specific gravity of a bar is nothing and it is different from the specific gravity of gold. ​(Round your answer to three significant​ digits.) B. The bar is not fake because its specific gravity is 19.3 and it is the same as the specific gravity of gold.

Answer 1