[化學] 請教一題倍比定律

看板TransBioChem作者 (cow)時間12年前 (2013/04/20 13:47), 編輯推噓0(002)
留言2則, 2人參與, 最新討論串1/1
A compound has a composition of 46.7 mass % of element A and 53.3 mass % of element B. A and B also form another second binar compound. If the two compounds are consistent with the law of miltiple proportions,which following compositions could be the second compound? (A)23.4 mass%A,76.6 mass%B (B)30.4 mass%A,69.6 mass%B (C)33.3 mass%A,66.7 mass%B (D)53.3 mass%A,46.7 mass%B (E)73.3 mass%A,26.7 mass%B ANS:C 我在想是不是從A、B在化合物中各佔的重量比例相除所形成的比例, 可是又不太知道怎麼下手 題目很落落長,感謝大大看完 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 36.237.228.37

04/20 16:37, , 1F
為什麼不能選B?
04/20 16:37, 1F

04/20 17:20, , 2F
我會寫B....
04/20 17:20, 2F
文章代碼(AID): #1HSYlTbt (TransBioChem)