12. What is the molarity of 0.31 mol of NaCl in enough water tomake 2.0 L of solution?
13. What is the molarity of the nitrate ions when 0.60 mol ofbarium nitrate, Ba(NO3)2, is dissolved inenough water to make 2.0 L of solution?
14. Calculate the molarity of calcium hydroxide that has beenprepared by dissolving 2.24 g of calcium hydroxide in water anddiluting the solution to a final volume of 4.00 L.
15. Calculate the molarity of the hydroxide ions in a solutionthat has been prepared by dissolving 70.3 g of barium hydroxide(Ba(OH)2) in water and diluting the solution to a finalvolume of 4.00 L. (M.W's: Ba 137.3 g/mol., O 16.0 g/mol, and H 1.0g/mol)
16. How many moles of H+ are in 181 mL of 0.71 Mnitric acid, HNO3?
