作业帮CuO+___=___+H2O___+NaOH=Na2CO3+_______+2HCL=____+___+CO2↑___+Zn=Zn(NO3)2+_______+H2SO4=MgSO4+___+___↑
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CuO+___=___+H2O___+NaOH=Na2CO3+_______+2HCL=____+___+CO2↑___+Zn=Zn(NO3)2+_______+H2SO4=MgSO4+___+___↑
CuO+___=___+H2O
___+NaOH=Na2CO3+____
___+2HCL=____+___+CO2↑
___+Zn=Zn(NO3)2+____
___+H2SO4=MgSO4+___+___↑
CuO+___=___+H2O___+NaOH=Na2CO3+_______+2HCL=____+___+CO2↑___+Zn=Zn(NO3)2+_______+H2SO4=MgSO4+___+___↑
CuO+H2 ==Δ== Cu+H2O
CO2+2NaOHMgSO4+H2O+CO2↑
答案不唯一,这是最常见的(尤其在初中).
CuO+___=___+H2O___+NaOH=Na2CO3+_______+2HCL=____+___+CO2↑___+Zn=Zn(NO3)2+_______+H2SO4=MgSO4+___+___↑
2n+7n=(___+___)n=___
写出下列物质的电子式:(1 )KCL___、(2 )MgCl2___、(3 )Cl2___、(4 )N2 ___、(5) H2O___、(6 )CH4___
英语：把词补充完整1. ___ ___ t___ ___2. ___ ___ ___ ___ ___ ___ a ___ ___ ___ ___3. ___ ___ ___ g4. ___ ___ t5. ___ e ___ ___ ___ ___ ___6. ___ ___ l7. ___ ___ ___ e8. ___ ___ ___ o ___ ___ ___9. ___ n ___ ___ ___ ___
饱和一元卤代烃的通式为___（n>=___）或者___
%>___
(>___
return from=___ ___ ___?
___,x,v,t,___,p,n
The girl is good at singing.=___ ___ girl ___ ___ good at singing.=___ ___ ___girl ___ ___ ___.还=___ ___ girl ___ ___ ___ ___ singing.
已知：4x16x32=2^n,则n=___
英语翻译My sister is ___ ___ working in that company.=My sister ___ ___ ___ ___ ___ ___ ___ ___.
He said,I lost my pen yesterday.=He said that ___ ___ ___ ___ pen ___ ___ ___.
等差数列an=6n-8 则a1=___ d=___
给下面单词加一个字母ear+___=___ hat+___=___ us+___=___ our+___=___and+___=___ now+___=___ each+___=___
Kitty came here three years ago=It ___ ___ ___ ___ since Kitty __ ___
英语翻译The ___ ___ is ___ ___ ___ ___ ___.
数学题求答案!速度!年利率=___×12,利息=___×___×___,利息税=___×___税后利息=___×（1-___）,本利和=___+___税后本利和=___+___