Why do non metal ions change from being soluble in solution to insoluble at the surface of the cathode

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

When a septic tank backs up a goes in to clean it out

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro