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0,2=ms/500g
ms=100 soli
500-100=400g wody
Dane:
mr=500[g];
Cp=20%.
ms=(Cp*mr)/100%;
ms=(20%*500[g])/100%=100[g].
mw=500[g]-100[g]=400[g].
Odp.Należy zmieszać 100[g] soli i 400[g] wody.