Cho sơ đồ phản ứng theo đúng tỉ lệ mol: `(1) X + 2NaOH` $\xrightarrow{{{t^o}}}$ `X_(1) + X_(2) + X_(3)` `(2) X_(1) + H_2SO_4` $\xrightarrow{{{t^o}}}$ `X_(4)` (axit adipic) `+ Na_2SO_4` `(3) X_(2) + CO` $\xrightarrow{{xt,{t^o}}}$ ` X_(5)` `(4) X_(3) + X_(5)` $\buildrel{{H^+, t^o}}\over\rightleftharpoons $ `X_(6)` (este có mùi chuối chín) `+ H_2O` Phát biểu sau đây đúng ? A. Phân tử khối của `X_(5)` là `60` B. Phân tử khối của `X` là `230` C. PTK của `X_(6)` là `130` D. PTK của `X_(3)` là `74` * tơ enang là tơ gì ? ---- viết rõ pt hộ mk nha, mk cảm ơn ---

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