200g-100%x-15%x=200*15%/100%=30[g]=waga soli kuchennej200g-30g=170g=waga wody
Cp=15%
mr=200g
ms=Cp*mr/100%
ms=15*200/100
ms = 30g soli
200g roztworu - 30g soli = 170g wody
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200g-100%
x-15%
x=200*15%/100%=30[g]=waga soli kuchennej
200g-30g=170g=waga wody
Cp=15%
mr=200g
ms=Cp*mr/100%
ms=15*200/100
ms = 30g soli
200g roztworu - 30g soli = 170g wody