Question

The exact value for the density of aluminum is 2.669g/cm3. Working in the science lab at school, Joseph finds the density of a piece of aluminum to be 2.75g/cm3. What is Joseph's percent error?

Answer 1

The formula for percent error is (M-A)/A X 100

M= the amount of the sample measured

A= the exact amount of the sample

so, 2.75-2.699=0.51/cm3

051/2.699=.01889

.01889 x 100=1.9% :)))