From first principle derive the density of Natural Gas in Kg/SCM.
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Answer:
Gas Density
Gas density is defined as the mass of the gas occupying a certain volume at specified pressure and temperature. The density is usually represented in units of lbm/ft3. Another common density representation is the “gas gradient” that is expressed in units of psi/ft. Gas density is a function of the pressure and temperature conditions for the gas. Due to its high compressibility, gas can change its volume significantly with change in pressure. Therefore, density changes (at low pressure) can be significant. At high pressures, the gas molecules are packed together and may approach the behavior of liquid (small variation of density with pressure). The following two equations are used to calculate gas density in the two commonly used units.