Do 150 gram 10 procentowego roztworu saletry dodano 10 gram tej substancji. Oblicz stężenie procentowe otrzymanego roztworu.
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ms1=?
mr=150g
Cp=10%
ms=mr*Cp/100%
ms=150g*10%/100%
ms=15g
150g-15g=135gH2O
ms2=15g+10g=25g
mr=135g+25g=160g
Cp=ms*100%/mr
Cp=25g*100%/160g
Cp=15,625%