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Cp=5%
mr=300g
Szukane:
ms=?
mC2H5OH=?
ms=Cp*mr/100%
mC2H5OH=mr-ms
Obliczenia:
ms=5%*300g/100%
ms=15g
mC2H5OH=300g-15g=285g
mr = 300g ms = ? (masa jodu)
Cp = % m rozp = ? (masa alkoholu, etanolu)
ms = Cp * mr / 100%
ms = 5% * 300g / 100%
ms = 15g
mrozp = mr - ms
m rozp = 300g - 15g = 285g
Masa potrzebnego jodu wynosi 15g, a etanolu 285g