`a)`

`n_{H_2O}={1,44}/{18}=0,08(mol)`

`n_{CO_2}<n_{H_2O}->X` gồm 2 alkane `C_nH_{2n+2};C_mH_{2m+2}`

BTNT C: `n.n_{C_nH_{2n+2}}+m.n_{C_mH_{2m+2}}=0,06`

BTNT H: `(n+1).n_{C_nH_{2n+2}}+(m+1).n_{C_mH_{2m+2}}=0,08`

`n_{C_nH_{2n+2}}=n_{C_mH_{2m+2}}`

`n_{C_nH_{2n+2}}(n+m)=0,06;n_{C_nH_{2n+2}}(m+n+2)=0,08`

`->{n+m}/{m+n+2}=0,08`

`->n+m=8`

`->(n;m)=(1;7);(2;6);(3;5)`

`n=1;m=7->CH_4:x(mol);C_7H_{16}:y(mol)`

`x+7y=0,06;2x+8y=0,08`

`->x\ne y` loại

`n=2;m=6->C_2H_6:a(mol);C_6H_{14}:b(mol)`

`2a+6b=0,06;3a+7b=0,08`

`->a\ne b` loại

`n=3;m=5->C_3H_8:p(mol);C_5H_{12}:q(mol)`

`3p+5q=0,06;4p+6q=0,08`

`->p=0,02;q=0`

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