Oblicz ile gramów cukru potrzeba do przygotowania 250 g.roztworu o stężeniu 5%
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mr=250g
Cp=5%
Szukane:
ms=?
ms=Cp*mr/100%
Obliczenia:
ms=5%*250g/100%
ms=12,5g
250g roztw. - xg cukru
x=(250*5)/100=12,5[g] cukru