阿摩線上測驗
22. A compound with the following molecular formula contains two double bonds. What is the correct subscript for H in the
formula? C10H?ClN2O
(A) 19
(B) 22
(C) 18
(D) 20
(E) 21
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統計： A(17), B(3), C(7), D(0), E(1) #2053819
統計： A(17), B(3), C(7), D(0), E(1) #2053819
