Question

The actual density of iron is 7.874 g/mL. In a laboratory investigation, Jason finds the density of a piece of iron to be 7.921 g/mL.

What is the percent error that is associated with Jason’s measurement?
-4.7%
-0.6%
0.6%
4.7%

Answer 1

Percent error = |(experimental − accepted) / accepted| × 100% = |(7.921 − 7.874) / 7.874| × 100% ≈ (0.047 / 7.874) × 100% ≈ 0.6%.