Question

the average density for a substance was determined as 6.5 g/ml. the same substance has an accepted density of 7.4 g/ml. what is the percent error for the data?
% error = \frac{|accepted - average|}{accepted} \times 100
about 12%
about 14%
about 0.14%
about 0.12%

Explanation:

Step1: Identify values

Accepted = 7.4 g/mL, Average = 6.5 g/mL

Step2: Calculate numerator

7.4 - 6.5

=

0.9

= 0.9

Step3: Apply formula

% Error = $\frac{0.9}{7.4} \times 100$ ≈ 12.16% ≈ 12%

Answer:

about 12%