阿摩線上測驗
20. Indicate which molecules display optical inactive: (1)CH3CHBrCH2CH3, (2)CH3CH2CHCl2,
(3)1-bromo-2chloropropane, (4)1,2-dichloropentane
(A)(2)
(B)(1), (2)
(C)(3)
(D)(1)
(E)(4)
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統計： A(5), B(3), C(0), D(5), E(0) #2275866
統計： A(5), B(3), C(0), D(5), E(0) #2275866
