A nurse is preparing to administer magnesium hydroxide 0.85 g PO to a school-age child. How many mg should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Identify the given information: Dose of magnesium hydroxide: 850 mg Understand the question: The question directly states that the nurse is preparing to administer 850 mg of magnesium hydroxide. Calculate the dose: In this case, there is no need for any further calculations since the dose is already given in milligrams. Confirm the answer: The answer of 850 mg aligns with the given dose, so it is confirmed as correct.