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dr=1,1g/cm3, Vr=150cm3, ms=?
mr=dr*Vr=1,1*150=165g
Cp=8%
ms=(Cp*mr)/100%=8*165/100=13,2g
zad2.
mr(poczatkowa)=150g, Cp=10%, ms(dodana)=20g
ms(poczatkowo)=(Cp*mr)/100%=8*150/100=12g
Cpx=?
msx=ms(poczatkowa)+ms(dodana)=12+20=32g
mrx=mr(poczatkowa)+ms(dodana)=150+20=170g
Cpx=(msx*100%)/mrx=32*100/170=18,82%
zad3.
mr=50g, Cp=10%, ms=?
ms=(Cp*mr)/100%=10*50/100=5g substancji rozpuszczonej
zad4.
V=45cm3, Cp=10%, dr=1,11g/cm3, ms=?
mr=dr*Vr=45*1,11=49,95g
ms=(Cp*mr)/100%=10*49,95/100=4,995g substancji rozpuszczonej