A mixture of gases consists of 0.1 kg of oxygen, 1 kg of carbon dioxide, and 0.5 kg of helium. This mixture is compressed to 17,500 kPa and 20oC. Determine the mass of this gas contained in a 0.3 m3 tank
(a) Treating it as an ideal gas mixture.
(b) Using a compressibility factor based on Dalton's law of additive pressures.
(c) Using a compressibility factor based on the law of additive volumes.
(d) Kay's psuedocritical pressure and temperature.