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# 4-05 - 4-5 A mixture of gases contains one kilogram of each...

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4-5. A mixture of gases contains one kilogram of each of the following species: methane, ethane, ropane, carbon dioxide, nitrogen. Calculate the following: p 1. The mole fraction of each species in the mixture 2. The average molecular mass of the mixture 4-5. Let assume 1 kg of each species. Then, the total amount of mass will be 5 kg. The number of moles of each species can be calculated as 4 , , , , i i i m niCHEPR MW  22 CON (1) Then, 4 2 2 1 0.0625 16 1 0.0333 30 1 0.0227 44.1 1 0.0227 44 1 0.0357 28 CH E PR CO N kg nk kg kmol kg nk kg kmol kg nk kg kmol kg nk kg kmol kg nk kg kmol  

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