# HW4_soln - 6.Calculatethestoichi iometricAFra atioandlowe...

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6. Calcula (C 8 H 15 ), b and gasol Define A = From tabl 85 . 0 ρ A = 15 . 0 ρ B = te the stoichi y VOLUME]. ine fuel dens = ethanol, B = le A 2: M A = 4 . 0 79 . 0 5 = × . 0 74 . 0 5 = × iometric AF ra Use the relev ity is 0.74 gm = gasoline 46, M B = 111, / 6715 cm gm 3 / 111 cm gm atio and lowe vant data in T m/cm 3 . LHV A = 26950 3 m er heating val able A.2. Assu 0, LHV B = 430 lue for E85 fu ume the dens 000 uel [85% etha sity of ethano nol+15% gaso ol is 0.79 gm/ oline /cm 3

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858 . 0 = + = B A A A ρ ρ ρ m , 142 . 0 1 = = A B m m 936 . 0 111 / 142 . 0 46 / 858 . 0 46 / 858 . 0 / / / = + = + = + = B B A A A A B A A A M m M m M m N N N n 064 . 0 1 = = A B n n 2 2 2 2 2 15 8 6 2 76 . 3 ) 76 . 3 ( CO E O H D N U N O U H C n O H C n
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