Molarity/Dilutions Directions: Calculate the following: 1. Calculate the molarity of 5.30g of NazCOs in 400. ml. of water 2. Calculate the molarity of 5.00g of NaOH in 750. ml of water 3. How many grams of KOH is required to make 100. mL of a 250 M solution? 4. How many grams of KCI are dissolved in 2.50 L of a .50 M solution? Name 5. What volume of a 4.0 M HCl solution has the same number of moles as 150 mL of a 2.5 M NaOH solution? 6. How many mL of 8.0 M NaOH is needed to prepare 250 ml. of a 2.5 M solution? 7. Describe the preparation of 500. mL of a 20M HCl solution from an 18 M stock bottle. 8. Describe the preparation of 250. mL of a 050 M AgNO: solution from a 1.2 M AgNO; solution. 9. Describe the preparation of 500. mL of a 350 M KNO; solution. 115