Ile gramów substancji należy rozpuścic w 360g wody aby otrzymac roztwór 20%
Cp=20%
mw=360g
ms=?
Cp=ms/ms+mw * 100%
20%=ms/ms+360g * 100% /*(ms+360g)
20ms+7200g=100ms
80ms=7200g /:80
ms=90g
0,2ms+72g=ms
ms-0,2ms=72g
0,8ms=72g
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Cp=20%
mw=360g
ms=?
Cp=ms/ms+mw * 100%
20%=ms/ms+360g * 100% /*(ms+360g)
20ms+7200g=100ms
80ms=7200g /:80
ms=90g
0,2ms+72g=ms
ms-0,2ms=72g
0,8ms=72g
ms=90g