Which is the best choice for preparing a buffer with a ph of 3.5?

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?

Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n

Heat is the total potential energy of a substance that can be transferred. true false