16. Which could be the pH of a solution whose H30+ ion concentration is less than the OH-ion concentration? A) 9 B) 2 C)3 D)4​

E becuase that is the only on that would make sense

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

The answer is d.potassium