作业帮please come in~下列各组离子能在pH=1的水溶液中大量共存的是A.H+ SO4 2- K+ Na+B.SO4 2- Na+ Cu2+ Cl-C.OH- NO3 - Fe3+ Mg2+D.K+ CO3 2- Na+ NO3 -
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please come in~下列各组离子能在pH=1的水溶液中大量共存的是A.H+ SO4 2- K+ Na+B.SO4 2- Na+ Cu2+ Cl-C.OH- NO3 - Fe3+ Mg2+D.K+ CO3 2- Na+ NO3 -
please come in~
下列各组离子能在pH=1的水溶液中大量共存的是
A.H+ SO4 2- K+ Na+
B.SO4 2- Na+ Cu2+ Cl-
C.OH- NO3 - Fe3+ Mg2+
D.K+ CO3 2- Na+ NO3 -
please come in~下列各组离子能在pH=1的水溶液中大量共存的是A.H+ SO4 2- K+ Na+B.SO4 2- Na+ Cu2+ Cl-C.OH- NO3 - Fe3+ Mg2+D.K+ CO3 2- Na+ NO3 -
PH=1说明有大量H+
第一个可以
第二个可以
第三个H+和0H-生成水
最后一个H+和CO3 2-生成水和二氧化碳
选A和B C里的HO-不能共存 D里的CO3-不共存
Yes.Come in,please.
-May I ( )(come)in?-Come,please.
please come in~下列各组离子能在pH=1的水溶液中大量共存的是A.H+ SO4 2- K+ Na+B.SO4 2- Na+ Cu2+ Cl-C.OH- NO3 - Fe3+ Mg2+D.K+ CO3 2- Na+ NO3 -
Come in please and have a s___ .
Don‘t stand_____the room.Come in,please.
Don't stand o____.Come in please
Don‘t stand_____the room.Come in,please.
come in please的中文意思
Take off 、 please come in!用中文翻译
don,t stay ( ) please come in
do not stand o------.come in,please .
please come in and take a s(-----)
come in,please 变否定句
please come in (否定句）
Come in,please!的英语成份缩写
Come in ,please.改为否定祈使句____ ____,please.
please come
Come in ,and please have a s( )补全单词