Question

During a lab activity, students calculate the density of an element to be 7.78 g/cm3. The density
listed on the periodic table is 7.13 g/cm3. Calculate the percent error and identify the element

Answer 1

So to determine the percent error in an experiment you have to take the absolute value of the difference between your experimental value and your true value divided by the true value and multiply by 100. It should look something like this: l(experimental value-true value)l / true value. Which do you think is the experimental value and which is the actual value. Hint: The actual or true value is normally given either by an instructor or a laboratory manual.