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Chemie

Potřebujete-li roztok s látkovou koncentrací železitých iontů 45 mmol × dm-3, použijte roztok síranu železitého o koncentraci:

Potřebujete-li roztok s látkovou koncentrací železitých iontů 45 mmol × dm^-3, použijte roztok síranu železitého o koncentraci: