How many grams of MgCl2 are needed to make 450 mL of a 1.25 M solution?

16- counting by fours

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).

C, small, hard spheres with insignificant volumes