Question

помогите!!!!!!!?????!!!!!

Answer 1

S + O2 = SO2
2 SO2 + O2 = 2 SO3
SO3 + H2O = H2SO4
H2SO4 + BaO = BaSO4 + H2O
H2SO4 + BaO2 = BaSO4 + H2O2
2 H2SO4 + BaO2 + 2 FeSO4 = BaSO4 + Fe2(SO4)3 + 2 H2O
SO3 + CaO = CaSO4
CaSO4 = CaO + SO3
SO2 + BaO = BaSO3
SO2 + Ba(OH)2 = BaSO3 + H2O
S+Ba=BaS