Hej
Potrzebuje na szybciutko :>
Zad 1
Do 150g 15% roztworu soli dodano 270g wody . Oblicz stężenie procentowe (Cp).
Wynik to 5,36% około.
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mr1=150g
cp1=4%
mr2=250g
cp2=10%
cp=?
ms1=(4%*150g)/100%=6g
ms2=(10%*250g)/100%=25g
mr=150g+250g=400g
ms=6g+25g=31g
cp=(31g/400g)*100%=ok 7.8%
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