What reagents are needed? Please help by showing the mechanism Don’t send me a link either please

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?

Displacement is the slope of a velocity vs. time graph a. true b. false

How many molecules are in 6.0 moles of methane