Select the correct answer an acid is added to water, and a new equilibrium is established. what is the system after the acid is added? ph = 1x 10-14 ph 4 -14 ph > poh and kw = 1 x 10-14 ph > poh and kw > 1 x 10-14 reset next

Two changes are described below. a green banana turns yellow and ripens. a layer of rust forms on an iron nail. which statement is true about the two changes? a) both are chemical changes because new substances are formed. b) both are physical changes because only the physical state of the substances change. c) a is a physical change due to a change of state, but b is a chemical change because new molecules are formed. d) a is a chemical change due to a change of state, but b is a physical change because new molecules are formed.