Ответ:
2Ba + O2 = 2BaO
BaO + 2HCl = BaCl2 + H2O
BaCl2 + Pb(NO3)2 = Ba(NO3)2 + PbCl2
Ba(NO3)2 + H2SO4 = BaSO4 + 2HNO3
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Ответ:
2Ba + O2 = 2BaO
BaO + 2HCl = BaCl2 + H2O
BaCl2 + Pb(NO3)2 = Ba(NO3)2 + PbCl2
Ba(NO3)2 + H2SO4 = BaSO4 + 2HNO3