... (3n+1)CnH2n +2 + O2 => n CO2 + (n+1)H2O 2 ; 2, 3(3n+1) mol<=1,15 mol 10 ,2 => M CnH2n +2 = 14n +2 = 2, 3.(14n +2) = 10 ,2( 3n+1) <=> n = 3,5 2, 33n+1 C3,5H9 + 5,75O2 ... = x = nCnH2n+2Oz TH2 : CnH2nOz + O2 => nCO2 + nH2O =>nx mol nx mol => nH2O = nCO2 = nx mol hay nH2O = nCO2 TH3: CnH2n-2Oz + O2 => nCO2 + (n-1)H2O ... 2 H 2 ;10% CH4 ; 78%H 2 2CH4 C 2 H 2 + 3H 2 (1) CH4 C + 2H 2 (2) A. 407 ,27 . B. 448,00. C. 520 ,18. D. 4 72, 64....