December 2018 1 8 Report
W miejsca X wpisać wzory chemiczne i dobrać współczynniki :
a) H2S + X ----> CaS + H2O
b) H2SO4 + X ----> Al2(SO4)3 + H2
c) SO2 + X ----> Na2SO3 + H2O
d) P2O5 + X ----> K3PO4
e) Al2O3 + X -----> Al.(NO3)3 + HNO
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