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mr = 300g - 100g = 200g
Cp = ms/mr * 100%
Cp = 30 /200 * 100%
Cp = 15%
ma= 100g
mr= 300g
Cp1= 10%
Szukane:
Cp2= ?
Wzór:
Cp= ms/mr * 100%
ms= Cp*mr/100%
Rozwiązanie:
ms= 10% * 300g/100%
ms= 30g
Cp2= ms/mr * 100%
Cp2= 30/200 * 100%
Cp2= 15%
Odp. Stężenie procentowe tego roztworu wynosi 15%.
pozdrawiam ;] kate66