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ms=cp*mr/100%=25*200/100=50g - masa soli
mw=mr-ms=200-50=150g - masa wody
mr=200g
Cp=25%
Szukane:
mw=?
ms=?
Rozwiązanie:
Cp=mr/mr *100%
ms= Cp*mr÷100%
ms= 25%*200g÷100%
ms=5000÷100%
ms=50g
mw= mr-ms
mw= 200g-50g
mw=150g