Какое уравнение соответствует реакции обмена?
Укажите правильный вариант ответа:
AgNO3 + NaCl = AgCl + NaNO3
CaO + H2O = Ca(OH)2
2Na + 2H2O = 2NaOH + H2
FeO + H2 = Fe + H2O
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