Depends on the commodity. 300 cubic inches of mulch and 300 cubic inches of cement will not weigh the same.
300 cubic inches is 4.916 liters or 1.299 U.S. gallons
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
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.
300 x 2/12 = 50 cubic feet 27 cu ft = 1 yard 50 cu ft = 1.85 yards. That is about 2.4 tons
0.15 US 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.
The Ford 4.9L straight 6 engine is 300 cubic inches.