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10%=(Ms/Mr)*100%
potem dosypujemy soli wiec Ms1=Ms+0,5 i Mr1=Mr+0,5
wiec
Cp2=(Ms+0,5/Mr+0,5)*100%
przekształcamy wzory na Cp1 i Cp2
10%*Mr=Ms*100%
15%*(Mr+0,5)=(Ms+0,5)*100%
i teraz mamy dwa rownania z dwiema niewiadomymi
Mr=10*Ms
15*10*Ms+7,5=100*Ms+50
150Ms-100Ms=50-7,5
50Ms=42,5
Ms=0,85kg
wtedy Mr=10*Ms=10*0,85=8,5kg