If a medication dosage is prescribed as 500 grams, how many kilograms is this?

To convert grams to kilograms, you use the conversion factor that 1 kilogram is equal to 1000 grams. This means that to convert grams to kilograms, you divide the number of grams by 1000.

In this case, if the prescribed dosage is 500 grams, you would perform the following calculation:

500 grams ÷ 1000 = 0.5 kilograms.

This calculation clearly shows that 500 grams is equivalent to 0.5 kilograms. Therefore, the correct answer reflects this direct conversion, confirming that the equivalent weight in kilograms is indeed 0.5 kg.