Oblicz stężenie procentu roztworu sporzadzonego z 300g soli i 500ml wody.
mv=500ml=500cm³=500g
ms=300g
mr=500+300=800g
cp=ms/mr·100%=300/800·100=37,5%
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mv=500ml=500cm³=500g
ms=300g
mr=500+300=800g
cp=ms/mr·100%=300/800·100=37,5%