What is the molarity of a naoh solution if 28.2 ml of a 0.220 m h2so4 solution is required to neutralize a 25.0-ml sample of the naoh 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).