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m=v*d
m=600cm3*0,8g/cm3 = 480g alkoholu
Z def. stęż. procent.
20g jodu------500g roztworu (20g jodu + 480g alkoholu)
xg jodu--------100g roztworu
x=4g jodu
x=4%
Stężenie jodu w roztworze wynosi 4%