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50g 10% ................ 25-x
..................x%
100g 25% .............. x-10
50/100 = 25-x/x-10
50(x-10) = 100(25-x)
50x-500 = 2500-100x
150x = 3000
x = 20%
II)
DANE:
mr₁=50g
Cp₁=10%
mr₂=100g
Cp₂=25%
SZUKANE:
ms₁, ms₂, m₃, mr₃, Cp₃
ROZWIĄZANIE:
ms₁=Cp₁*mr₁/100%
ms₁=10*50/100
ms₁ = 5g
ms₂=Cp₂*mr₂/100%
ms₂=25*100/100
ms₂ = 25g
ms₃=ms₁+ms₂
ms₃=30g
mr₃=mr₁+mr₂
ms₃=150g
Cp₃=ms₃*100%/mr₃
Cp₃=30*100/150
Cp₃ = 20%