According to the quality conversion query, we first need to know the relationship between kilograms and grams. 1 kg is 1000 g, which tells us how to convert kilograms into grams. Our task is to convert 3500 kilograms into kilograms and grams. The calculation results are: 3500 kilograms equals 3500 kilograms and 3500000 grams. So, 3,500 kilograms equals 3,500 kilograms and 3,500,000 grams.

G is the unit of mass, one thousandth of a kilogram (kg), and one gram is the mass of 0.501×10 23c-12 atoms.