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Chemie

Jaká je látková koncentrace NaOH v roztoku o objemu 0,400 dm3, obsahujícího NaOH o hmotnosti 12 gramů? Ar(Na) = 23, Ar(O) = 16, Ar(H) = 1

Jaká je látková koncentrace NaOH v roztoku o objemu 0,400 dm³, obsahujícího NaOH o hmotnosti 12 gramů? Ar(Na) = 23, Ar(O) = 16, Ar(H) = 1