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mr=90g
ms=Cp*mr/100%
ms=5*90/100
ms = 4,5g
m=4,5g
d=0,75g/cm³
v=m/d
v=4,5/0,75
v = 6cm³ alkoholu
Cp = 5% mr = 90g
ms = ?
ms = Cp * mr / 100%
ms = 5% * 90g / 100%
ms = 4,5g
teraz obliczamy objętość alkoholu
m = 4,5g V = ?
d = 0,75g/cm³
d = m / V ===> V = m / d
V = 4,5g / 0,75g/cm³
V = 6 cm³