# Problem: An experiment is performed to determine if pennies are made of pure copper. The mass of 11 pennies was measured on a balance and found to be 26.951 g. The volume was found by dropping the 11 pennies into a graduated cylinder initially containing 10.00 mL of water. The volume after the pennies were added was 12.90 mL.If the density of pure copper at the same temperature is 8.96 g/cm3, are the pennies made of pure copper?

###### FREE Expert Solution

We are asked to determine if the pennies are made of pure copper by comparing the density with that of pure copper which is 8.96 g/cm3.

Density represents the mass of an object or compound within a given volume. When calculating for density, we use the following equation:

$\overline{){\mathbf{density}}{\mathbf{=}}\frac{\mathbf{mass}}{\mathbf{volume}}}$

###### Problem Details

An experiment is performed to determine if pennies are made of pure copper. The mass of 11 pennies was measured on a balance and found to be 26.951 g. The volume was found by dropping the 11 pennies into a graduated cylinder initially containing 10.00 mL of water. The volume after the pennies were added was 12.90 mL.

If the density of pure copper at the same temperature is 8.96 g/cm3, are the pennies made of pure copper?