30 БАЛЛОВ !!!!!!!!!!!ОЧЕНЬ СРОЧНО НУЖНО ПОЖАЛУЙСТА Отметьте уравнения возможных реакций *

Hg + H2SO4=
CaO + H2SO4=
SO3 + NaOH=
Zn(OH)2+ CuCl2=
Fe(OH)3+ H2SO4=
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