True or false heat energy is similar to static electricity

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

Calculate the number of molecules present in 0.750 mol of mgo.

What are the 4 phases of matter in order of increasing engery content?