Explain why this substance is formed?

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?

Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.

Which of the following molecules is polar? c3h7oh c2h5cooh