В каком случае реакция между растворами веществ протекает до конца?
А)Na2,SO4+BaCl2
B)HCl+AgNO3
C)CuSO4+Na2S
D)CuSO4+NaNO3
E)CuO+HCl
Срочно!Даю 20 баллов.
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