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:

density=massvolume

View Complete Written Solution
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?