28 g/L 1.5 2.8 g/L 15 mL 13.5 PRACTICE PROBLEMS The fully worked out solutions to a few of the problems below are included at the end of the exercise. These are indicated in the problem. Be sure to try the problems on your own first! Practice Problems Question 17 & 18 You need to prepare 100 mL of a 5 g/L solution of KH2PO4. Your stock solution is 57 g/L. How many mL of the stock solution do you need (V1) to make the target solution? Record your answer to one decimal place. Solution in the feedback