Answer:
2.568 × 10⁻³ kg
Explanation:
The amount of sodium to be taken by an adult is measured in terms of a limit, as given here.
That limit has been set as 2568 mg , when measured in milligrams.
The basic conversion from milligrams to g is done by dividing with 1000. Then 2568 milligrams will be 2.568 grams.
Now 100 grams are present in 1 kilogram.
So 2.568 grams are divided with 1000 to get the specified mass in kg.
The gives it as 2.568 × 10⁻³.
