0.09 moles of sodium sulfate in 12 ml of solution

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).

The answer is neonhope it

Higher temperature = molecules move around faster. and vice versa.

Answer//the law of conservation of mass.;