Depending upon the tip of the of a dropper pipet, there are approximately 20 drops per milliliter of water. the experimental procedure, parts a and b indicates the addition of 5-10 drops of each solution to the test tube. calculate the volume range in milliliters for a solution.

Answer : Volume range in milliliters for a solution is 0.25 ml to 0.5 ml.

Solution : Given,   1 ml = 20 drops

There are 20 drops present in     =    1 ml of water

                 In 1 drop                       =    

        And in 5 drops                     =    

                                                      =     0.25 ml

For range calculation, 0.25 ml is multiplied by the 2, we get

    = 0.25 × 2

    = 0.5 ml

Hence, the volume range is 0.25 ml to 0.5 ml.

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