Question

What effect will there be on the accuracy of a measurement if you use a volumetric pipet that is not completely dry but instead contains a few drops of the same liquid that you will be drawing into the pipet?

Answer 1

Using a volumetric pipet that is not completely dry and contains a few drops of the same liquid being measured will result in an inaccurate measurement.

Step-by-step explanation:

The accuracy of a measurement will be affected if a volumetric pipet is not completely dry and contains a few drops of the same liquid that you will be drawing into the pipet. When there are additional drops of liquid in the pipet, it will increase the volume of liquid being measured and therefore result in an overestimation of the true value. This will lead to an inaccurate measurement.

For example, if you are using a volumetric pipet to measure 10 mL of a liquid and the pipet contains 2 extra drops of the same liquid, the volume actually being measured will be more than 10 mL. This will affect the accuracy of the measurement.

Answer 2

This act can lower accuracy as it the "few drops of the same liquid" will increase the total volume of the liquid.
This case will be different if the volume of the liquid is counted by drops, not the total liquid that sucked up by the pipet. It is best to keep an effort to makes the measurement accurate by using a standardized procedure. Even a few drops can cause significant increase if the number of liquid used is small