I once had a book about the ocean that claimed that there was 38 pounds of gold in one cubic mile of seawater. You could figure 1 cubic kilometer from here but you are still left with the validity of the claim of the book and even worse, my memory of that book. Still, something to play with.
10000 metric tons.
8 tonnes
More info needed. How much does 0.4 cubic feet of what weigh? Air? Lead? Water? Dirt?
About 0.42 ounces. Specific gravity (compared to water) about 0.73
0.283 lb. per cubic inch
1472 pounds
16 lbs
a cubic ton
According to the US Geological Survey ... the oceans contain about 1,338,000,000 cubic kilometers of water. A cubic meterof water is 1000 kg, and a cubic kilometer has 1,000,000,000 of those, so the overall total mass is 1,338,000,000,000,000,000,000 kg, or 1.338 x 1021 kg.
One cubic centimeter of water would fit into that cup, and it would weigh 1 gram.
2.5 cubic feet of water weighs about: 156 pounds.
It takes up a cubic kilometer of space.
More info needed. How much does 0.4 cubic feet of what weigh? Air? Lead? Water? Dirt?
71400 cubic inches of water weighs approx 11466 Newtons.
that is 25,133 kilograms
The weight of 2.25 cubic feet of water is approx 4495 pounds-force (lbf).
The weight of any volume of water will depend on the gravitational force acting upon it. 57 cubic feet of water would weigh nothing in a spaceship, for example.
Depends on the size of the aquarium. Water weights 10 pounds per gallon.
Roughly 72 pounds.