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a fost răspuns

CuCO3 -> a + b
a + HCl -> d + e
d + AgNO3 -> f + g
Na + e -> h + i
d + h -> j + m
h +H2SO4 -> n+ e
n + BaCl2 -> o + m
m + H2SO4 -> n +p
b + e -> r
b + Ca (OH)2 -> s + e
Aflati subtantele a,b,d,e,f,g,h,i,j,m,n,e,o,p,s,r

Răspuns :

a-CuO
b-CO2
d-CuCl2
e-H2O
f-Cu(NO3)2
g-AgCl
h-NaOH
i-H2
j-Cu(OH)2
m-NaCl
n-Na2SO4
o-BaSO4
p-HCl
s-CaCO3
r-H2CO3