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Cp : 30%
mr : 200g
Szukane:
ms: ?
mw : ?
V wody : ?
Rozw:
Cp=ms/mr x 100%
0,3=ms/200
ms=60g
200-60=140g wody jest w roztworze
140g wody=140cm3 (poniewaz gestosc wody to 1g/cm3)