What mass of each solute is present in 294g of a solution that contains 4.86% by mass nacl and 7.54% by mass naco(3)

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.

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?