問題詳情

75. Compound X and Y contain two elements A and B only. 3.0 g of compound X contains 1.4 g ofA, while 27.0 g of compound Y contains 7.0 g of A. The formula of compound X is AB. Whichone is the formula of compound Y?
(A) AB2
(B) A4B6
(C) A2B
(D) A3B4
(E) A2B5

參考答案

答案：E
難度：計算中-1
書單：沒有書單，新增