Oblicz, ile gramów wodorotlenku sodu potrzeba do przygotowania 0,5dm
10-procentowego roztworu o gęstości 1,115 grama na cm szescienny
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Cp=10%
mr=0,5dm³*1,115g/cm³=500cm³*1,115g/cm³=557,5g
ms=?
Cp=ms/mr * 100% /*mr
Cp*mr=ms*100% /:100%
ms=Cp*mr/100%
ms=10%*557,5g/100%
ms=55,75g