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mr=200g
ms=?
obliczam masę substancji rozp ms
Cp=ms/mr*100%
ms=Cp*mr/100%
ms=10%*200g/100%=20g
Obliczam końcowe stężenie po dodaniu 10g soli
Cpk=(ms+10g)/(mr+10g)*100%=30g/210g*100%=14,29%