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Chemie

Jaká je látková koncentrace NaCl, obsahuje-li 0,1 dm3 roztoku 2,9 g NaCl? Ar(Na) = 23, Ar(Cl) = 35

Jaká je látková koncentrace NaCl, obsahuje-li 0,1 dm³ roztoku 2,9 g NaCl? Ar(Na) = 23, Ar(Cl) = 35