When 5.623 g of NaHCO3 is dissolved in enough water to make a 250.0 mL solution, the molarity of the resulting solution is:

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.

B.) falsehope this !