ПОМОГИТЕ СРОЧНО !!! Задание 2. Расставьте коэффициенты и укажите тип химической реакции
1) AgNO3 + BaCl2 = AgCl + Ba(NO3)2
2) Cu(OH)2 = CuO + H2O
3) Mg + HCl = MgCl2 + H2
4) SO2 + O2 = SO3
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