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ms=40g
Cp=ms/mr*100%
Cp=40/140*100%=28,5%
Stężenie wynosi 28,5%
m rozt=140g
m KCl=40g
szukane:
cp=?
c p=m KCl/m rozt *100%
c p=40 g /140g *100%
c p=400/14 %
c p=28,6%