19. How many moles are in a 2.20 g sample of cadmium? A. 0.196 mol

B. 0.0430 mol

C. 0.430 mol

D. 0.0196 mol​

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 should be vaporization