Question

a student reports three trials to measure the density of an unknown metal. The percent error in these trails is given in the table

Answer 1

Hi!

Let me complete the question for you. 

Trial Count  Percent Error

    Trial 1               0,05

    Trial 2              0,02

    Trial 3               0,01

The most accurate value is the one From Trial 3

Percent Error is a measure of the difference between the experimental value and a theoretical one. The equation for calculating the percent error is shown below:

$Percent Error=\frac{|Experimental Value-Theoretical Value|}{|Theoretical Value|}*100$

Results are more accurate as the Percent Error is lower, so as Trial 3 has the lowest percentage error, the result of it would be the most accurate.

Have a nice day!