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ms=?
mr=100g
Cp=20%
100g---------100%
x-------------20%
100x=2000/:100
x=20g
masa substancji wynosi 20g
stężenie roztworu (Cp)=20%
masa substancji (ms)=?
Cp=(ms × 100%):mr //×mr
Cp × mr = ms × 100% //:100%
ms=(Cp × mr):100%
ms=(20% × 100 g) : 100%
ms=20g
Odp>: Masa cukru wynosi 20g.
Cp=20%
ms= ?
100g - 100%
x - 20%
x=20g