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12019?дʩ,ֹܷƷʴǣ Aڱˢ
BڱͿ
CڱƸ
Dʪ
22019?ƷҪɺϽƳɵǣ Aˮ
Bͭ
C̥
Dë
32019?Ͼн,۵͵ǣ Aͭ
B
C
D
4.2019?лѧӦûӦǣ A2NaOH+CuSO4TNa2SO4+CuOH2 BCaCO3+CO2+H2OCaHCO32 C2NaNO3
2NaNO2+O2
DCuO+H2Cu+H2O
52019?ݣͭͭпĺϽйڻͭ˵ȷǣ Aȴͭʴ BȲӦ CӲСڴͭ Dȫܽϡ
6.2019?̩ͼijѧȤСƵĹ۲Ʒʴʵװáȷǣһʱ,˿ϳʴ
ʦԴŶѧ
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һʱ,ˮ洦˿ʴ
һʱ,ƿ,ΪҪ һʱ,ƿ,Ϊй
A٢
Bڢ
Cڢ
Dۢ
72019?֣ڴоȼ,ǣ A˿
B
C
D
82019?֦Ϊ˴ӺFeSO4CuSO4ĹҵˮлCu,ijѧϰСƲʵ顣
˵ȷǣ AXֻCu BԼBϡ
CҺZеΪFeSO4CuSO4 DIõIJֻձͲ
9.2019?нܸϡᷴӦǣ
ʦԴŶѧ
Ʒѧսп
A B C Dþ
102019?ຣXYZֽ,XYZֱϡ,ֻXܽⲢݣYZֱAgNO3Һ,Yɫ,Zޱ仯,ֽǿ˳ǣ AZXY
BYZX
CXZY
DXYZ
112019?ɽӻѧĽǶȶдʾн,ǣ
A𣨼ͭ,Ϊթ˵Ͻ۵Ĵ B»Auѧʲ C׳нͨȼﵽĿ
Dɸ֩ʹ̼ʵĺ,ﵽֵı
122019?̶ý̿Ļԭ,ijͬѧôԭͼװýʵ顣˵ȷǣ
Aʵ鲻Ҫβװ
BʵӦͨһʱ鴿COټ CNaOHҺԼ
DӦ,δӦFe2O3,Բüķᴿ 132019?ڽйؽԴǣ Aø˿ϴ,ֽྻ
ʦԴŶѧ