\(\%O=100-64.86-13.51=21.63\%\)
\(Đặt:CTPT:C_xH_yO_z\)
\(x:y:z=\dfrac{64.86}{12}:13.51:\dfrac{21.63}{16}=5.405:13.51:1.351875=4:10:1\)
\(CT:C_4H_{10}O\)
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