Chemistry
Senior High
Resolved
請問這題要怎麼算E
有兩種元素X與Y,生成兩種化合物甲
與乙,其質量百分比如附表所示,若甲
的化學式為 XYa,則乙的化學式可能為
何?
○ (A) XY
O (B) XY2
X
Y
○ (C) X2Y3
甲
75%
25%
乙
80%
20%
○
(D) X3Y2
○ (E) XY3。
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