Your patient is receiving a potassium chloride infusion of 75 mmol in 500 ml 5% glucose, with the ordered volume being 40 ml/h. How many millimoles per hour is the patient receiving? Your patient’s serum potassium level is 4.1 mmol/l and she is ordered 10 mmol potassium chloride IV stat. Potassium chloride ampoules are available as a 25 mmol/10 ml formulation. How many millilitres of the ampoule would you give?