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Chemie

Jakou látkovou koncentraci síranu sodného zvolíte při přípravě roztoku, v němž bude koncentrace sodných iontů 18 mmol × dm-3?

Jakou látkovou koncentraci síranu sodného zvolíte při přípravě roztoku, v němž bude koncentrace sodných iontů 18 mmol × dm^-3?