How do you convert 725 micrograms to kilograms?

To convert micrograms to kilograms, you need to understand the relationships between these units of measurement.

1. First, recognize that one kilogram is equal to 1,000,000 micrograms (or 1 kg = 10^6 micrograms).

2. To convert from micrograms to kilograms, you divide the number of micrograms by 1,000,000.

In this case, the conversion is done as follows:

725 micrograms ÷ 1,000,000 micrograms/kilogram = 0.000725 kilograms.

This result aligns with the numerical representation of 0.000725 when expressed in standard decimal form, simply moving the decimal point six places to the left.

Thus, the correct answer correctly reflects that 725 micrograms is equivalent to 0.000725 kilograms.