问题
填空题
甲、乙、丙、丁、戊分别是Na2SO4、Ba(NO3)2、HNO3、BaCl2、NaOH五种溶液中的一种,现利用X溶液鉴别它们,试根据下图关系回答问题
写出下列物质的化学式:
甲_______乙_______丙_______丁_______X_______
答案
BaCl2;HNO3;Ba(NO3)2;Na2SO4;Na2CO3
甲、乙、丙、丁、戊分别是Na2SO4、Ba(NO3)2、HNO3、BaCl2、NaOH五种溶液中的一种,现利用X溶液鉴别它们,试根据下图关系回答问题
写出下列物质的化学式:
甲_______乙_______丙_______丁_______X_______
BaCl2;HNO3;Ba(NO3)2;Na2SO4;Na2CO3
根据方框中所提供信息完成对话 | |
B: 1 A: She was the most famous woman scientist in the world. B: Where was she from? A: 2 But she studied in Paris and lived in France for many years. B: Why was she so famous? A: 3 They are very useful for the world. 4 and for chemistry in 1911. Few people could be better than her at that time. B: 5 I want to have a look, too. A: Sure. But don't lose it. | |
1. __________________ 2. __________________ 3. __________________ 4. __________________ 5. __________________ |