You cannot. If you know the volume, temperature and pressure of a pencil, you will be no closer to knowing its mass!
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Not enough information. To calculate mass, you would need volume and density (mass = volume x density).
mass= density*volume
Density = Mass/Volume so Mass = Density*Volume.
density = mass/volume If you know density and mass, you can calculate the volume by manipulating the density equation such that volume = mass/density. Example: density = 3.57g/cm3 mass = 2.4g volume = ? volume = mass/density = 2.4g/3.57g/cm3 = 0.67cm3
An object has a mass, say M It also has a volume, say V A useful relation between the above two is the ratio M/V which is defined as the density of the object. It is the mass of an object whose volume is unity. In solids and liquids, the density remains constant over temperature ranges and pressure ranges. But in gases the density is affected by temperature and pressure.