D. She is not right, because there will be more successful collisions
between reactants in the concentrated solutions.
Answer:
Magnesium (mg) because the Atomic mass will be 24.4986amu
Becuase you can't change it back to the shiny nail that it was at first So so therefore its a chemical and chemicals can not be changed back into its regular state.
i think it c i dont know if im right tho.
