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Chemie

Jakou hmotnost má chlorid vápenatý, potřebný pro přípravu 3 kilogramů roztoku s hmotnostním zlomkem w(CaCl2) = 0,025? Ar(Ca) = 40, Ar(Cl) = 35

Jakou hmotnost má chlorid vápenatý, potřebný pro přípravu 3 kilogramů roztoku s hmotnostním zlomkem w(CaCl₂) = 0,025? Ar(Ca) = 40, Ar(Cl) = 35