How much does one gallon of fresh water weigh?

One gallon of fresh water weighs approximately 8.33 pounds. This value is based on standard conditions where water's density is about 62.4 pounds per cubic foot. When converted to gallons, it calculates out to about 8.33 pounds per gallon. This is an important figure in various fields, including engineering and fluid dynamics, as it aids in understanding weight and volume relationships for liquids.

While the other choices represent either inaccurate weights for a gallon of water or refer to different contexts or units, the specific weight of 8.33 pounds for a gallon of fresh water is the widely accepted standard used in calculations and practical applications.