volume_mute
A gallon of water weighs 8 ln. What is its volume in cubic feet?
publish date: 2024/10/21 23:15:00 UTC
Answer = (1) ft3
Correct Answer
(1) 128
Explanation
To convert the weight of a gallon of water into its volume in cubic feet, follow these steps:
- A gallon of water weighs 8 pounds.
- The density of water is approximately 62.4 pounds per cubic foot (check the table below).
We can now calculate the volume using the formula:
$\text{Volume (cubic feet)} = \frac{\text{Weight (pounds)}}{\text{Density (pounds per cubic foot)}}$
Substitute the known values
$\text{Volume} = \frac{8 \text{ lb}}{62.4 \text{ lb/ft}^3} ≈ 0.128 \text{ ft}^3$
So, the volume of a gallon of water is approximately 0.128 ft3
| Substance | Mass Density (kg/m4) | Weight Density (N/m3) |
|---|---|---|
| Gases | ||
| Air (dry, at sea level) | 1.204 | 11.8 |
| Oxygen | 1.429 | 14 |
| Nitrogen | 1.251 | 12.3 |
| Carbon Dioxide | 1.977 | 19.4 |
| Helium | 0.1786 | 1.75 |
| Hydrogen | 0.0899 | 0.88 |
| Liquids | ||
| Water (pure) | 1000 | 9810 |
| Ethanol | 789 | 7747 |
| Mercury | 13546 | 132840 |
| Sea Water | 1025 | 10064 |
| Olive Oil | 920 | 9025 |
| Glycerol | 1260 | 12351 |
| Metals | ||
| Aluminum | 2700 | 26460 |
| Copper | 8960 | 87898 |
| Iron | 7874 | 77294 |
| Lead | 11340 | 111207 |
| Gold | 19300 | 189330 |
| Silver | 10490 | 102801 |
| Steel (Carbon) | 7850 | 76949 |
| Titanium | 4500 | 44145 |
| Non-Metals | ||
| Wood (Oak) | 700 | 6867 |
| Wood (Pine) | 500 | 4905 |
| Rubber (Natural) | 920 | 9025 |
| Glass (Soda-Lime) | 2500 | 24525 |
| Concrete | 2400 | 23544 |
| Ice | 917 | 8996 |
| Graphite | 2250 | 22072 |
| Silicon | 2330 | 22871 |
| Others | ||
| Polyethylene | 950 | 9310 |
| Polystyrene | 1050 | 10291 |
| PVC | 1380 | 13540 |
| Brick (clay) | 1900 | 18639 |
| Asphalt | 2330 | 22871 |
| Nylon | 1150 | 11281 |
Reference
Basic Physics: A Self-Teaching Guide, go-math-science.com