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Chemie

Kolik gramů KCl obsahuje 800 ml roztoku o látkové koncentraci c(KCl) = 0,402 mol dm-3? Ar(K) = 39, Ar(Cl) = 35

Kolik gramů KCl obsahuje 800 ml roztoku o látkové koncentraci c(KCl) = 0,402 mol dm^-3? Ar(K) = 39, Ar(Cl) = 35