Depends on the commodity. 300 cubic inches of mulch and 300 cubic inches of cement will not weigh the same.
22.2 cubic yards.
You will need about 3.7 cubic yards (around 4.75 tons) of gravel.
300^3 feet = 3600^3 inches. Dimensional weight in the USA is cubic inches/194, thus 18.5lb Internationally it is cubic inches/166, thus 21.6lb http://en.wikipedia.org/wiki/Dimensional_weight
Oh, dude, 300 cubic inches is like the volume of a box that's 5 inches long, 5 inches wide, and 12 inches tall. So, you know, it's not huge, but it's not tiny either. Just enough space to hold a bunch of random stuff you probably don't need.
300 pounds is a fraction of a ton. 300/2000 tons reduced will be 3/20 of a ton or in a decimal 0.15 tons.
0.15 US tons.
300 x 2/12 = 50 cubic feet 27 cu ft = 1 yard 50 cu ft = 1.85 yards. That is about 2.4 tons
This question cannot be answered because there are no units given for 300 cubic.
I think you mean 3000? and it depends on the volume (size) which is measured in Cubic Inches.
To answer you need to know: 1ml = 1cc, 16.387064cc = 1 cubic inch, 1 gallon = 231 cubic inches, 128 ounces = 1 gallon, Your answer is: 300 ml = (300 / 16.387064)*(128/231) = 10.1442 ounces
1 cubic metre = 1000 Litres so 300 cubic metres = 300 000 Litres.
About 2 tons of feathers or 300 tons of heavy metal.