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Dane:
mr=400g
Cp=10%
ms=Cp*mr/100%
ms=10*400/100=40g
Cp2=ms/mr+x/100%
8%=40g/400g+xg/100% I :100%
8%/100%=40/400g+xg
0,08=40/400+x I*(400+x)
0,08*(400+x)=40
32+0,08x=40
32-40=-0,08x
-8=-0,08x I: (-0,08)
x=100gH20
zad2
Cp=0,5%
mr=300g
ms=0,5*300/100=1,5g
2%=1,5+x/300+x*100%
dalej liczysz tak jak normalne równanie matematyczne;)