Which of the following aqueous solutions has the highest (a) osmotic pressure; (b) boiling point; (c) freezing point; and (d) vapor pressure at 50°C? A. 0.100 m NaNO3 B. 0.100 m glucose C. 0.100 m CaCl2

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).

Answer:   d.  carbon dioxide.

The answer is c. risk