Pipets used for the transfer of samples of aqueous solutions are always rinsedwith a small portion of the solution to be used before the sample is taken. calculate the percentage error arising in an experiment when 1-ml, 5-ml, and 10-ml pipets are used for transfer and each pipet contains 5 drops of water adhering to the inside of the barrel. a single drop of water has an approximate volume of 0.05 ml

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25%, 5% and 2.5% are the percentage error arising in an experiment when 1-ml, 5-ml, and 10-ml pipette are used for transfer.

Explanation:-

We are told that each pipette contains 5 drops of water adhering to the inside of the barrel.

We are also told that a single drop of water has an approximate volume of 0.05 ml.

Total volume of water adhering to the inside of the barrel = 5 x 0.05

                                                                                                    = 0.25 mL

This volume of water adhering to the inside of the barrel is the cause of error in an experiment.

Thus percentage error = x 100

For 1 mL pipette,

Percentage error       = x 100

                                      = 25%

For 5 mL pipette,

Percentage error       = x 100

                                      = 5%

For 10 mL pipette,

Percentage error       = x 100

                                      = 2.5%

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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