Here's why:
* Density: Water has a density of 1 gram per cubic centimeter (g/cm³).
* Conversion: 1 gallon is equal to 3.785 liters, and 1 liter is equal to 1000 cubic centimeters.
* Calculation: So, 1 gallon of water is 3.785 liters * 1000 cm³/liter = 3785 cm³.
* Mass: The mass of 1 gallon of water is 3785 cm³ * 1 g/cm³ = 3785 grams.
* Weight: To convert grams to pounds, divide by 453.592 grams/pound. So, 3785 grams / 453.592 grams/pound = 8.34 pounds.
Note: The weight of water can vary slightly based on temperature because water expands when heated.
