if density of metal bar is 2.8 g/cm^3, what could be the conclusion?comparing calculated density and the metal bar is probably Aluminum

1 Answer | Add Yours

pacorz's profile pic

pacorz | High School Teacher | (Level 3) Educator

Posted on

The bar is probably made of aluminum. The accepted value for the density of Aluminum is 2.7 g/cm^3, so your calculated density of 2.8 is within 3% of the accepted value.

If you examine a chart of accepted values for the density of various metals, you will find that most of the metals are considerably denser that aluminum, with the next nearest being titanium with a value of 4.5 g/cm^3. Looking at metals that are lighter than aluminum, magnesium is the closest at 1.7 g/cm^3. Since neither of these values is anywhere near 2.8 g/cm^3, it would be reasonable to conclude that your sample has to be made of aluminum.


We’ve answered 319,809 questions. We can answer yours, too.

Ask a question