Which observation most likely indicates that only a chemical change has taken place A. States of matter change

B. The change cannot be reversed(my answer)

C. A reaction occurs

D. The shape changes

The solubility of barium nitrate is 9.02 g/100 g h2o at 20°c. a 15.2 g sample of barium nitrate is added to 200.0 g of water at 20°c. is the solution saturated, unsaturated, or supersaturated? a. unsaturated b. saturated c. supersaturated