Question

Date:
to be
A 1.000 ml sample of acetone,
common solvent used as a paine
remover, was
placed in small both
whose mass
was known
38.0015
g The following values
were obtained when the acetone
filled bottle was weighted : 38.77989
38,77989
and 38.78 olg. Hoce
coould you characterise the precision
of these measurement
if the actual mass of the aceton
coas 0:77919?
and accuracy of​

Answer 1

Answer:

Given A 1.000 mL sample of acetone, a

common solvent used as a paint

remover, was placed in a small bottle

whose mass was known to be 38.0015

g. The following values were obtained

when the acetone - filled bottle was

weighed : 38.7798 g, 38.7795 g and

38.7801 g.

We need to check average measurement to actual mass of acetone 0.7791 g. So average of measurement is

0.7783 g + 0.7780 g + 0.7786 g / 3 = 0.7783 g

Now we need to calculate the percentage difference of average measurement to actual mass

Percentage = actual – measured / actual x 100

= 0.7791 g – 0.7783 g / 0.7791 g x 100 = 0.102%

Since there is a very small difference between the measured mass and actual mass, the measurements are accurate