We´re asked to determine the number of extra electrons contained in drop C.
When doing the experiment, Millikan found that different droplets have different masses.
Depending on the mass of the droplet, he was able to determine the amount of charge (q) it could hold.
In 1909, Robert Millikan performed an experiment involving tiny, charged drops of oil. The drops were charged because they had picked up extra electrons. Millikan was able to measure the charge on each drop in coulombs. Here is an example of what his data may have looked like.
Based on the given data, how many extra electrons did drop C contain? Express your answer as an integer.
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