Question

The exact value for the density of aluminum is 2.699 g.cm^3. Working in the science lab at school, Joseph finds the density of a piece of aluminum to be 2.75 g/cm^3. What is Joseph's percent error? (Round to the nearest hundredth.)

Answer 1

Joseph's percentage error would be 1.89%

Step-by-step explanation:

Exact value of the density of aluminium = 2.699 g/cm³

Calculated value of the density of aluminium = 2.75 g/cm³

Percentage error = ?

We know:

`Percentage error = (experimental - exact)/(exact) X 100\\\\`

`= (2.75 - 2.699)/(2.699) X 100\\\\= (0.051)/(2.699) X 100\\\\= 1.89\\`

Therefore, Joseph's percentage error would be 1.89%