問題詳情
5．有兩種不同元素X、Y，可化合成兩種不同的化合物甲、乙，甲由8克X及6克Y化合而成；乙則含有40％的X，若甲的化學式為XY，則乙的化學式為
(A)X2Y
(B)XY
(C)XY2
(D)XY3
(E)X3Y。
(A)X2Y
(B)XY
(C)XY2
(D)XY3
(E)X3Y。
參考答案
答案：C
難度：適中0.5
統計：A(1),B(0),C(1),D(0),E(0)
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