Oblicz ile gramów wodorotlenku sodu potrzeba do przygotowania 0,5 dm3 30% roztworu o gęstości d=1,29g/cm3.
0,5dm³=500cm³
mr=500cm³*1,29g/cm³=645g
ms=Cp*mr/100%
ms=30%*645g/100%
ms=193,5g
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0,5dm³=500cm³
mr=500cm³*1,29g/cm³=645g
ms=Cp*mr/100%
ms=30%*645g/100%
ms=193,5g