A gas mixture has the following composition in terms of mass fractions: H2, 0.20; N2, 0.55; CO2, 0.25. Determine (a) the composition in terms of mole fractions. (b) the apparent molecular weight of the mixture.
Nitrogen (N2) at 180 kPa, 508C occupies a closed, rigid container having a volume of 2 m3 . If 5 kg of oxygen (O2) is added to the container, what is the molar analysis of the resulting mixture? If the temperature remains constant, what is the pressure of the mixture, in kPa? Assume ideal gas behavior.
A control volume operating at steady state has two entering streams and a single exiting stream. A mixture with a mass flow rate of 11.67 kg/min and a molar analysis 9% CH4, 91% air enters at one location and is diluted by a separate stream of air entering at another location. The molar analysis of the air is 21% O2, 79% N2. If the mole fraction of CH4 in the exiting stream is required to be 5%, determine (a) the molar flow rate of the entering air, in kmol/min. (b) the mass flow rate of oxygen in the exiting stream, in kg/min. Considering Constant-Composition Processes
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