If 10.8g of KBr is added to a 500.0 mL volumetric flask, and water is added to fill the flask, what is the concentration of KBr

Select all that apply. using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 (s) pb+2(aq) + 2cl -(aq). the concentration of the products yield a ksp of 2.1 x 10-2:

Now look at the segment of the graph between the two data points marked with black squares. describe how the boiling point and melting point plots behave between these points. be as specific as possible.

Just on number 2 (all parts), and if you do answer explain in detail