A cotton is not specific enough to put a number to it. I would measure 10 cotton balls and average the mass. Cotton balls are a fraction of a gram.
Depends on the caliber
sixteen pounds
I Think it is +500 oz
it weigh's about 200 pounds
They are about 5'9 and weigh 120
like a hell load of cheese balls
Standard cricket balls weigh between 5.5 and 5.7 ounces (155 and 163 grams).
An average model weigh about 110 Ib.
Modst weigh about 2 pounds.
103 grams on average
On average they weigh about 4.5 tons and are about 9 metres in length.