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mr1=30g
Cp1=20%
mr2=20g
Cp2=5%
Szukane: Cp3=?
Rozwiązanie:
100% --- 30g
20% --- xg
-------------------
x= 20%*30g/100% = 6 g
100% --- 20g
5% --- xg
-------------------
x= 5%*20g/100% = 1 g
mr3 = 30 g + 20 g = 50 g
ms3 = 6 g + 1 g = 7 g
50g --- 100%
7 g --- x%
------------------
x= 7g * 100% / 50 g = 14%
Odp : Stężenie procentowe wynosi 14%