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Vr = 1 dm3 = 1000 cm3
ms = 295g
Cp = ?
d = m/V
m = d*V
mr = 1,18g/cm3*1000cm3
mr = 1180g
Cp = ms/mr*100%
Cp = 295g/1180g*100%
Cp = 25%
Odp: Roztwór jest 25%. ;)