問題詳情
12．某有机化合物仅由碳、氢、氧三种元素组成，其相对分子质量小于150，若已知其中氧的质量分数为50％，则分子中碳原子的个数最多为（ ）
(A)4
(B)5
(C)6
(D)7
(A)4
(B)5
(C)6
(D)7
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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