The exact value for the density of aluminum is 2.699g/cm3. Working in the science lab at school, Joseph finds the density of a piece of aluminum to be 2.75 g/cm3. what is Joseph percent error? (Round to the nearest hundredths)

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

M = the amount of the sample measured

A = the exact value of the sample

And the value of M-A is always positive

So, 2.75-2.699 =.051g/cm3, and. 051/2.699=.01889

.01889 x 100=1.889% or 1.9% error