Có: nCO2 : nH2O =1:2
=> mCO2 : mH2O = nCO2/nH2O . MCO2/MH2O
=> mCO2 : mH2O = 1/2 . 22/9 =11/9 => mCO2 = 11/9 mH2O
nO2 = V/22.4 = 44.8/22.4 = 2 (mol)
=> mO2 = n .M = 2 . 32 = 64(g)
Theo ĐLBTKL:
mX + mO2 = mCO2 + mH2O
=> 16 + 64 = mCO2 + mH2O => mCO2 + mH2O = 80 (g)
=> 11/9 . mH2O + mH2O = 80
=> mH2O =36(g) => mCO2 = 80 - 36 =44(g)