Giving brainliest for answers too ALL 3

Easy definition for atom and atomic mass

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+