Question

As the result of experimental work, a student finds the density of a liquid to be .137 g/ml. the known density of the liquid is .1478 g/ml. find the student's experimental error (ee) and percentage error (pe).

Answer 1

the known density of the liquid is

`d_known = 0.1478 g /ml`

the density of a liquid

`d_calculated = 0.137 g /mol`

`experimental error = d_known – d_calculated`

`= 0.1478 – 0.137 = 0.0108 g /mL`

Thus, experimental error of 0.0108 g /mL is present.

`Percentage error = [ (d_known – d_calculated) / (d_known) ] * 100`

`=[ (0.0108) / 0.1478 ] * 100`

`= 7.31 %`

Thus, Percentage error of 7.31 % is present.