Density = mass/volume
Mass = (density) x (volume)
Volume = mass/density
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Multiply them: density*volume = mass
Well its quite easy: Density=Mass/Volume Volume=Mass/Density SO if mass and density of a cube are given you can easily find its volume.
This question requires density to answer. Density is a ratio of mass to volume, and is dependent on temperature. Materials do have variable density based on temperature. The equation for density is mass/volume.
Density = mass/ volume volume= 4/3(pie)(r^3) ***r= radius in meters** so find volume then divide mass by volume and there you go.
That all depends on the type of gas and volume given for the problem. We can't determine the mass and density of the gas cylinder if we are not given these info, which can also include pressure (because density varies based on that variable).