How many grams in a 55 gallon drum?

Oh, dude, seriously? A 55-gallon drum is a unit of volume, not weight. It's like asking how many pounds are in a gallon of milk. You gotta be more specific, like asking how many pounds of water can fit in a 55-gallon drum or something. But hey, I can tell you there are approximately 208,197 grams in 55 gallons of water if you really wanna know.