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mr=250g ms=?
Cp=25%
m =Cp*mr/100%
ms=25%*250g/100%
ms=62,5g
Odp: Aby uzyskać 25% roztwór należy w wodzie rozpuścić 62.5g sodu
mr = 250g ms = ?
Cp = 25%
ms = Cp * mr / 100%
ms = 25% * 250g / 100%
ms = 62,5g