Convert cubic meters in kilograms? No can do. Cubic meters is a volume, kilos are weight. Unless you know the density you can't get an answer.
You can't convert just Kgs. to cubic metres. A kilogram is a measure of weight while a cubic meter is a measure of size.
The medium density should given to convert from mass (kilogram) to volume (1 cubic meters). Assuming water of 1000 kg/cubic meter, than 1 cubic meter would contain 1000 kilograms,
The density of copper is 8940 kilograms per cubic meter.
One cubic meter of water is one thousand kilograms.
How to convert Cubic meter to BTU
That's the same as converting cubic meter to kilograms. You can't do it, unless you know the density of the specific substance you are working with.
Density = 300/15 kilograms per cubic meter = 20 kilograms per cubic meter
1 Cubic Meter = 333Kgs
A cubic meter of pure water has weight of 1000kg
One pound per cubic foot is equal to 16 kilograms per cubic meter.
How to convert mmbtu to cubic meter