Adult right lung weighs 360-570 grams.
Adult left lung weighs 325-480 grams.
2 and a half pounds
The human brain weighs more then the lungs. The brain weighs 9 pounds The lungs weighs 5 pounds
Lungs
Brain
your brain since your lungs are filled with air
brain
Brain
Brain
the brain
Brain
brain
Brain
The Brain is the heaviest organ listed in the question. It weighs about three pounds. Lungs average just over one pound each.