Gọi CT là: \(C_xH_yO_z\)
\(n_{CO_2}=\dfrac{5,04}{22,4}=0,225mol\) => \(n_C=0,225mol\)
\(\Rightarrow m_C=0,225.12=2,7g\)
\(n_{H_2O}=\dfrac{4,05}{18}=0,225mol\)
\(\Rightarrow m_H=0,225.2=0,45g\)
\(\Rightarrow m_O=5,55-2,7-0,45=2,4g\)
\(\Rightarrow n_O=\dfrac{2,4}{16}=0,15mol\)
\(x:y:z=0,225:0,45:0,15\)
\(=\dfrac{3}{2}:3:1=3:6:2\)
\(\Rightarrow C_3H_6O_2\)