Oblicz, ile gramów jonu należy rozpuścić w etanolu, aby powstało 80 g 3-procentowego roztworu.
Cp=ms/mr x 100%
0,03=ms/80
ms=2,4g jodu
mr=80g
Cp=3%
ms=?
Cp=ms/mr * 100% /*mr
Cp*mr=ms*100% /:100%
ms=Cp*mr/100%
ms=80g*3%/100%
ms=2,4g
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Cp=ms/mr x 100%
0,03=ms/80
ms=2,4g jodu
mr=80g
Cp=3%
ms=?
Cp=ms/mr * 100% /*mr
Cp*mr=ms*100% /:100%
ms=Cp*mr/100%
ms=80g*3%/100%
ms=2,4g