What is the formula for molarity? What is the molarity of a solution that contains 0.00372 moles hydrochloric acid in 2.39 x 10-2 liters of solution? How many moles of NaCl will I need to make a 7M solution with 1 Liter of solution? What is the molarity of a solution that has 4.83 moles in 2.85 L of solution? How many liters of my solution do I need to have a 3.9 M solution with 7.1 moles of solute? Calculate the molarity if a flask contains 1.54 moles potassium sulfate in 125 ml of solution.