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全俄中学生奥林匹克竞赛化学试题及答案１９９５年第四阶段理论部分试题苗庆生李安祥译九年级１．克拉普罗特（１７４３～１８１７）研究一种新矿物时发现，“当溶解１００格令的矿物样品于盐酸中时，溶液的质量比原矿样及盐酸溶液的总质量减少３０格令，而将过量硫...
All-Russian High School Student Olympiad Chemistry Questions and Answers 1995 Fourth Stage Theory Partial Questions Miao Qingsheng Li Anxiang Translation Year 9 1. When Klaprot (1743 ~ 1817) studied a new mineral, he discovered that "When a 100-grain mineral sample is dissolved in hydrochloric acid, the mass of the solution is reduced by 30 grains compared with the total mass of the original ore and hydrochloric acid solution. Will excessive sulfur ...