Найдите и исправьте ошибки, расставьте коэффициенты в след. схемах:
1)Ba(OH)2+H2SO4=BaSO4+H2O
2)BaSO4+HCl=Na2SO4+BaCl2
3)Cu(OH)2+HCl=CuCl+H2O
4)Al(OH)3+K2SO4=Al2(SO4)3+KOH
5)K2SO4+H2CO3=K2CO3+H2CO3
6)Ca2CO3+HNO3=Ca(NO3)2+H2O+CO2
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