The largest stone jar on the plain of jars in laos has a mass of 6.0 x 10^3 Kg. Express this mass in miligrams.

To express the mass in milligrams, we need to convert it from kilograms to milligrams. The conversion factor between kilograms and milligrams is 1 kilogram = 1,000,000 milligrams.

Therefore, to convert 6.0 x 10^3 kilograms to milligrams, we multiply it by the conversion factor:

6.0 x 10^3 kg * 1,000,000 mg/kg = 6.0 x 10^9 mg.

So, the mass of the largest stone jar on the plain of jars in Laos is 6.0 x 10^9 milligrams.