﹣You didn't find the owner of the book,did you?
.____So I gave them to our teacher.( )
No,I did
Yes,I didn't
No,I didn't
Yes,I did
下列关于物质性质的说法不正确的是
能够用来鉴别BaCl2、NaCl、Na2CO3三种物质的试剂是 AgNO3溶液 B.稀硫酸 C.稀盐酸 D.稀硝酸
不能用离子方程式Ba2+ + SO42-=BaSO4↓表示的化学反应有
下列物质中水解的最终产物不含葡萄糖的是
向一盛有氯气的集气瓶中加入某液体,振荡后,形成无色溶液,则加入的液体是