Module 10 Molarity and Solution Concentration Practice Molarity 1. Calculate the molarity of a NaOH solution if 10.00 grams of sodium hydroxide is dissolved in 250.00 mL volumetric flask. = 1.00 m 2. Calculate the molarity of a KCI solution if 1.345 grams of KCI is dissolved in a 50.00 mL flask. 3608m 3. How many grams of potassium bromide are needed to prepare a 500.00 mL solution with a molarity of 3.0 M? 79 79.33 mol 4. How many grams of sodium sulfate are needed to prepare a 75.00 mL solution with a molarity of 0.350 M? 5. What volume, in milliliters, of a solution is needed to prepare a 0.100 M solution of sodium chloride containing 0.0250 mol of NaCl? 6. Calculate the molarity of HCl if 10.00 mL of 8.0 M HCI is diluted to a volume of 250.00 mL. 7. How many milliliters of 3.0 M NaOH is needed to prepare a 0.250 M solution with a volume of 75.00 mL