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2. 軟錳礦(pyrolusite)是由 Mn 和 O 組成的化合物。如果軟錳礦的質量中 63%是來自於錳,下列哪一項是軟錳礦的實驗式?(A) Mn2O (B) MnO (C) Mn2O3 (D) M
問題詳情
2. 軟錳礦(pyrolusite)是由 Mn 和 O 組成的化合物。如果軟錳礦的質量中 63%是來自於錳,下列哪一項是軟錳礦的實驗式?
(A) Mn2O
(B) MnO
(C) Mn2O3
(D) MnO2
(E) Mn2O5
參考答案
答案:D
難度:適中0.423077
統計:A(6),B(5),C(1),D(11),E(1)
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*閱讀下文後,回答 48--50 題礦坑垂直深度平均約四百公尺,某些更達九百,以長度計則可以長到三千。地熱溫度四十,大氣壓力增強,瓦斯充斥。無邊的漆黑,無援的深淵,接近閻羅殿府。坑道矮窄,跪伏曲身爬行
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