In the scary chemistry lab, you come across a bottle that has "0.15M HNO3" written on it (this means that the [H+] = 0.15M). 250mL are in the bottle. Since you're scared of acids, you add the acid to a large beaker and add 1250mL of water to it in order to make yourself feel better. What is the pOH of the diluted solution?

A.

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).

Ibelieve it's temperature! i'm not 100% sure.