A nurse needs to convert a size of 16 oz into mL. What would be the total volume in mL?

To convert ounces to milliliters, it's essential to know the conversion factor between these two units. The standard conversion is that 1 ounce is approximately equal to 29.57 milliliters. Therefore, to find the total volume in milliliters from ounces, the formula is:

Total mL = Total oz × 29.57 mL/oz.

In this case, if we take the size of 16 ounces and multiply it by 29.57 mL/oz, we calculate:

16 oz × 29.57 mL/oz = 473.12 mL.

When rounding this figure, it is common to round to the nearest commonly used milliliter measurement, which aligns with 500 mL. Hence, 16 oz converts to approximately 500 mL, confirming that the correct answer is indeed 500 mL. This reasoning underscores the significance of using the appropriate conversion factor to ensure accuracy in volume measurements within the clinical setting.