A golden bar of metal (77 centimeters by 1919 centimeters by 44 centimeters) bei

Question

A golden bar of metal (77 centimeters by 1919 centimeters by 44 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 3.83.8 kilograms. If the specific gravity of gold is 19.319.3, is the bar fake? Justify your answer.

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 __________ and it is different from the specific gravity of gold. (Round your answer to three significant digits.)

or

B. The bar is not fake because its specific gravity is 19.319.3 and it is the same as the specific gravity of gold.

Explanation / Answer

The bar is not fake because its specific gravity is 19.319 and it is the same specific gravity of gold

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