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Educational diagram illustrating temporary and permanent water hardness with chemical formulas and properties.

Educational diagram illustrating temporary and permanent water hardness with chemical formulas and properties.

Схема или таблица, где жёсткость делится на временную и постоянную: временная — гидрокарбонаты Ca(HCO₃)₂ и Mg(HCO₃)₂ постоянная — сульфаты (CaSO₄, MgSO₄) и хлориды (CaCl₂, MgCl₂) Иногда это оформлено как блок-схема или две колонки. и еще добавить по примеру Voir plus

#education #science #chemistry

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