The patient is to take 10 mEq of potassium gluconate PO daily. The medication bottle is labeled 20 mEq per 15 mL. The patient's wife asks the home health nurse how many teaspoons of potassium gluconate she should give her husband. The nurse sets up the following proportion: 20 mEq: 15 mL:: 10 mEq: x mL The nurse solves for x mL, then converts the answer to tsp using a conversion chart. The nurse instructs the patient's wife to administer _______ to her husband daily.