In the laboratory you dissolve 12.7 g of silver fluoride in a volumetric flask and add water to a total volume of 125 mL. What is the molarity of the solution? __M.
What is the concentration of the silver cation? __M.
What is the concentration of the fluoride anion? __M.

The answer should be vaporization 

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

I’m really not sure what’s the answer. sorry