W 150 cm3 alkoholu etylowego o gestosci 0,8g\dm3 rozpuszcono 5g Jodu. Oblicz stezenie procentowe..
Błagam o pomoc.. ;dd
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v=150cm3
d=0,8g/cm3
m=v*d
m=150*0,8
m = 120g alkoholu
ms=5g
mrozp.=120g
mr=ms+mrozp.= 5g+120g = 125g
Cp=ms*100%/mr
Cp=5*100/125
Cp = 4%