1 cup is equal to how many milliliters (mL)?
2400
240
60
420
The Correct Answer is B
A. 2400.: One cup does not equal 2400 mL; this value is ten times greater than the correct conversion and would represent approximately 10 cups. Using this conversion could result in severe overdosage when measuring liquid medications.
B. 240.: One standard cup equals 240 milliliters, which is the correct conversion used in medication dosage and nutritional calculations. This measurement is commonly applied when converting household measurements to metric values for accuracy in clinical settings.
C. 60.: Sixty milliliters equal only ¼ cup, which significantly underestimates the correct conversion. Using this value could result in administering insufficient fluid or medication volume.
D. 420.: Four hundred twenty milliliters is closer to 1¾ cups, which overestimates the true volume of one cup. Such an error could lead to inaccurate fluid balance or medication dosing.
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Related Questions
Correct Answer is D
Explanation
A. 3/30/25: Fran Jones DOB 2/2/72 morphine sulfate 4 IV stat Dr. James Brown.: This order is incomplete because it lacks the unit of measurement for the dose (e.g., mg). Missing dosage units make it unsafe for administration.
B. 3/30/25: Fran Jones DOB 2/2/72 Keflex (cephalexin) 500 mg every 6 hours for 7 days Dr. James Brown.: Although this order includes the drug, dose, frequency, and duration, it omits the route of administration. Without the route (e.g., orally or IV), the nurse cannot safely administer the medication.
C. 3/30/25: Fran Jones DOB 2/2/72 Demerol (meperidine) 50 mg IM for pain Dr. James Brown.: This order lacks a specific time interval or frequency for administration. The phrase “for pain” is too vague and could lead to inconsistent dosing without defined parameters.
D. 3/30/25: Fran Jones DOB 2/2/72 Digoxin (Lanoxin) 0.5 mg orally every day Dr. James Brown.: This order includes all required components—a date, patient identifiers, medication name (both generic and trade), dose, route, frequency, and prescriber’s signature. It is therefore considered a complete and safe medication order.
Correct Answer is C
Explanation
A. 60.: Sixty minutes equals one hour, not two. This underestimates the total time by half and would be incorrect in any time-based calculation or scheduling scenario.
B. 600.: Six hundred minutes would equal ten hours, which significantly overestimates the duration. This conversion error could lead to major timing mistakes in medication administration or monitoring.
C. 120.: One hour equals 60 minutes; therefore, two hours equal 60 × 2 = 120 minutes. This is the correct and precise conversion used for accurate time-related calculations in nursing and clinical practice.
D. 6.: Six minutes is far less than one hour and does not represent a realistic conversion. This would indicate a miscalculation of time by a large margin.
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