# Section 4.2 4-2. Determine the mass density, , for the mixing process illustrated in Figure 4-2. 4-3. A liquid hydrocarbon mixture was made by adding

Section 4.2 4-2. Determine the mass density, , for the mixing process illustrated in Figure 4-2. 4-3. A liquid hydrocarbon mixture was made by adding 295 kg of benzene, 289 kg of toluene and 287 kg of p-xylene. Assume there is no change of volume upon mixing, i.e., 0mixV, in order to determine: 1. The species density of each species in the mixture. 2. The total mass density. 3. The mass fraction of each species. 4-4. A gas mixture contains the following quantities (per cubic meter) of carbon monoxide, carbon dioxide and hydrogen: carbon monoxide, 0.5 kmol/m3, carbon dioxide, 0.5 kmol/m3, and hydrogen, 0.6 kmol/m3. Determine the species mass density and mass fraction of each of the components in the mixture. 4-5. The species mass densities of a three-component (A, B, and C) liquid mixture are: acetone, , acetic acid, , and ethanol, . Determine the ollowing for this mixture: 3326.4 kg/mA3326.4kg/mB3217.6 kg/mC f 1. The mass fraction of each species in the mixture. 2 The mole fraction of each species in the mixture. 3. The mass of each component required to make one cubic meter of mixture. 4-6. A mixture of gases contains one kilogram of each of the following species: methane (A), ethane (B), ropane (C), carbon dioxide (D), and nitrogen (E). Calculate the following: 1. The mole fraction of each species in the mixture 2. The average molecular mass of the mixture 4-7. Two gas streams, having the flow rates and properties indicated in Table 4.7, are mixed in a pipeline. Assume perfect mixing, i.e. no change of volume upon mixing, and determine the composition of the mixed stream in mol/m3. Table 4.7. Composition of gas streams Stream #1 Stream #2 Mass flow rate 0.226 kg/s 0.296 kg/s methane 0.48 kg/m3 0.16 kg/m3 ethane 0.90 kg/m3 0.60 kg/m3 propane 0.88kg/m3 0.220 kg/m3