The density of dry ice is about 1.5 g cm-3. Since there are 3785 cm3 in a gallon, a gallon of dry ice would weigh about 5.8 kg.
9.6 lbs per gal
NBA player Gal Mekel weighs 191 pounds.
8.66 lbs.
7 lbs
7 lb gal
7.52 lbs/gal
9.12 lbs/gal
31.275
70 lbs
only 60 pounds
330lbs
55 gallons?