Volume measurements will be made using a 25 mL graduated cylinder, which has major scale divisions marked every 2 mL and minor scale division every 0.2 mL.
What is the estimated uncertainty iin the volume measurements?
The uncertainty of a measurement is the extent to which the actual value may differ from the measured value.
This can be written as: measurement = best estimate +/- uncertainty
Here, volume measurements are being made using a 25 mL graduated cylinder which major scale divisions marked every 2 mL and minor scale divisions marked every 0.2 mL.
If a volume measurement is made using the cylinder and the value turns out to be X mL, it can be said with certainty that X lies between X + 0.2 mL and X - 0.2 mL. The uncertainty in measurements cannot be less than the smallest value that can be measured.
The uncertainty in the volume measurements made is 0.2 mL