Oblicz masę chlorku sodu zawartą w 40 g roztworu stężeniu 5%.
Cp=5%
mr=40g
ms=?
Cp= ms * 100% / mr
Cp * mr = ms * 100%
ms = Cp * mr / 100%
ms= 5% * 40g / 100%
ms = 2g
Cp=ms*100%/mr
ms=Cp*mr/100%
ms=5*40/100
ms = 2g NaCl
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Cp=5%
mr=40g
ms=?
Cp= ms * 100% / mr
Cp * mr = ms * 100%
ms = Cp * mr / 100%
ms= 5% * 40g / 100%
ms = 2g
mr=40g
Cp=5%
ms=?
Cp=ms*100%/mr
ms=Cp*mr/100%
ms=5*40/100
ms = 2g NaCl