11-13 is based from this experiment. In an experiment, a solution containing 11.7 g of sodium chloride, NaCl, reacted with a solution containing 34.0 g of silver nitrate, AgNO3. 28.7 g of silver chloride, AgCl, was produced together with sodium nitrate solution

The answer should be c.

I'm not sure but i will try to find out

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).

Precipitate, and gas