Ile gramów substancji należy rozpuścić w 200g wody aby otrzymać roztór 10%?
Cp=(ms/mr)*100%
Dane: mw + ms = mr mw = 200g Cp=10%
Szukane: ms = ? 10%=(ms/ms+200)*100% 0,1=ms/ms+200 0,1(ms+200)=ms 0,1ms+20=ms 0,9ms=20 ms=22,2g
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Cp=(ms/mr)*100%
Dane:
mw + ms = mr
mw = 200g
Cp=10%
Szukane:
ms = ?
10%=(ms/ms+200)*100%
0,1=ms/ms+200
0,1(ms+200)=ms
0,1ms+20=ms
0,9ms=20
ms=22,2g