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0,8g----1cm3
xg------625cm3
x=0,8*625
x=500g alkoholu
2. mr=ms+mrozp.
mr=masa roztworu
ms=masa substancji(jodu)
mrozp.=masa rozpuszczalnika(alkoholu)
mr=26,5g+500g
mr=526,5g
Cp=ms*100%/mr
Cp=26,5*100/526,5
Cp=5%