Odpowiedzi

2010-04-11T16:32:28+02:00
V=1,5dm³=1500cm³
Cp=5%
d=1,115g/cm³
m=?

d=mr/V
mr=V*d
mr=1500cm³*1,115g/cm³
mr=1672,5g---->masa roztworu

Cp=ms/mr * 100%
5%=ms/1672,5g * 100%
5%=(ms*100%)/1672,5g /*1672,5g
5% * 1672,5g=ms*100%
1672,5g=ms*20
ms=83,625g

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