Question

an ideal gas has a density of 1.38×10−6 g/cm3 at 1.00 × 10 −3 atm and 80.0 ∘c . identify the gas. an ideal gas has a density of 1.38×10−6 at 1.0010 and 80.0 . identify the gas. argon chlorine neon hydrogen oxygen nitrogen

Answer 1

The calculated mass shows that the given mass is oxygen.

calculation:-

P=m/v by  arranging  the  equation  we  get

R =0.082atm/mol/k

Mm=pRT/P = [(1.10  x10^-6 x1000g/l) xo.082  

atm/mol/k x(80+273] /(1.00  x10^-3) = 31.84  to the nearest ten is 32.

The ideal gas density depends on the molecular weight temperature and pressure of the system. Density is an important parameter in heat and mass transfer calculations. It is also used to derive many important dimensionless numbers such as the Reynolds number and the Peclet number.

Real gases approach ideal gas behavior at relatively low densities low pressures, and high temperatures. At high temperatures, the gas molecules have enough kinetic energy to overcome the intermolecular forces, but at low temperatures, the gas has less kinetic energy, so the intermolecular forces are more pronounced.

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