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Cp=(ms/mr)*100%
2%=(ms/80g)*100% / :100%
00.2=ms/80g /*80g
ms=1.6g
Odp. Zostanie 1.6g soli
2)
Cp=(ms/mr)*100% /100%
2%=(ms/300g)*100%
0.02=ms/300g /*300
ms=6g
6%=((6+x)/300g)*100% /100%
0.06=(6+x)/300g /*300g
18=6+x /-6
x=12g
Odp. Dodano 12g jodku potasu