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0,25=ms/200g
ms=50g soli
200-50=150g wody
Cp = 25 %
mr = 200 g
Szukane:
ms = ?
Cp = ms*100 % / mr
ms = Cp*mr /100 %
ms = 25 %*200 g /100 % = 50 g
200 g - 50 g = 150 g
Odp. Do przygotowania tego roztworu potrzeba 150 g wody i 50 g soli ;)