Approximately how much does a gallon of water weigh at room temperature (in pounds)?

• A. 5.00 pounds
• B. 10.00 pounds
• C. 2.72 pounds
• D. 8.34 pounds

Answer: (D)

Verified step by step guidance

1. Recall that the density of water at room temperature (around 20-25°C) is approximately 1.00 g/cm³ or 1.00 kg/L.
2. Convert the volume of one gallon to liters, knowing that 1 gallon is approximately 3.785 liters.
3. Calculate the mass of the water in kilograms by multiplying the volume in liters by the density of water: \(\text{mass (kg)} = \text{volume (L)} \times \text{density (kg/L)}\).
4. Convert the mass from kilograms to pounds using the conversion factor: 1 kilogram is approximately 2.20462 pounds.
5. The resulting value will give you the approximate weight of one gallon of water in pounds, which is close to 8.34 pounds.