下列符号的“2”各表示什么意义(1) H2CO3_____________________________________________ (2)2NO2________________________,______________________ (3)2Ba2+_______________________,______________________ -2 (4)H2O_________________________,_______
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![下列符号的“2”各表示什么意义(1) H2CO3_____________________________________________ (2)2NO2________________________,______________________ (3)2Ba2+_______________________,______________________ -2 (4)H2O_________________________,_______](/uploads/image/z/303675-51-5.jpg?t=%E4%B8%8B%E5%88%97%E7%AC%A6%E5%8F%B7%E7%9A%84%E2%80%9C2%E2%80%9D%E5%90%84%E8%A1%A8%E7%A4%BA%E4%BB%80%E4%B9%88%E6%84%8F%E4%B9%89%281%29+H2CO3_____________________________________________+%282%292NO2________________________%2C______________________+%283%292Ba2%2B_______________________%2C______________________+-2+%284%29H2O_________________________%2C_______)
下列符号的“2”各表示什么意义(1) H2CO3_____________________________________________ (2)2NO2________________________,______________________ (3)2Ba2+_______________________,______________________ -2 (4)H2O_________________________,_______
下列符号的“2”各表示什么意义
(1) H2CO3_____________________________________________ (2)2NO2________________________,______________________ (3)2Ba2+_______________________,______________________ -2 (4)H2O_________________________,_____________________ +2 (5)CaI2_________________________,_______________________
下列符号的“2”各表示什么意义(1) H2CO3_____________________________________________ (2)2NO2________________________,______________________ (3)2Ba2+_______________________,______________________ -2 (4)H2O_________________________,_______
1.一个碳酸分子里有两个氢原子.2.第一个是两个二氧化氮分子,第二个是一个二氧化氮分子里有两个氧原子.3.第一个是两个钡离子