Peter conducted an experiment to investigate how much water a paper towel could absorb. Initially, He found that one paper towel absorbed 13.31 g of water. Later he found that his scale was not calibrated and he had to repeat the experiment. After repeating the experiment with a new scale, He found that one paper towel can actually absorb 13.99 g of water. What is the approximate percent error between the findings between first and second reading?

1 answer

The actual value of the amount of water absorbed by one paper towel is 13.99 g.

The percent error between the first reading (13.31 g) and the actual value (13.99 g) can be calculated using the formula:

% error = | (experimental value - actual value) / actual value | x 100%

% error = | (13.31 g - 13.99 g) / 13.99 g | x 100%
% error = | (-0.68 g) / 13.99 g | x 100%
% error ≈ 4.86%

Therefore, the approximate percent error between the first and second reading is about 4.86%.