The mass of a moon rock is 3.5 km what is the mass of the moon rock in grams

3,500 grams

Step-by-step explanation:

1 kilogram=1,000 if you use a smaller unit, your answer is bigger. If you use bigger unit, your answer is smaller. To change from Kg to g you need to multiply by 1,000.1 kilogram=1,000g3.5kg=3.5*1000=3,500 grams