Odpowiedź :
Zadanie 1
Dane:
ms=20 g
mH2O=400 g
Szukane:
R=?
20g---400 g H2O
xg---100 g H2O
x=5 g
R: 5g/100 g H2O
Zadanie 2
Dane:
R: 8 g/100 g H2O
ms=160 g
Szukane:
mH2O=?
8 g---100 g H2O
160g---xg H2O
x=2000 g
Zadanie 3
Dane:
R: 75 g/100 g H2O
mH2O=250 g
Szukane:
ms=?
75g---100 g H2O
xg---250g H2O
x=187,5 g
Zadanie 4
Dane:
ms=12 g
mr=200g
Szukane:
Cp=?
Cp=ms*100%/mr
Obliczenia:
Cp=12g*100%/200g
Cp=6%
Zadanie 5
Dane:
ms=20 g
mr=180g+20g=200g
Szukane:
Cp=?
Cp=ms*100%/mr
Obliczenia:
Cp=20g*100%/200g
Cp=10%
Zadanie 6
Dane:
mr=500 g
Cp=20%
Szukane:
ms=?
ms=Cp*mr/100%
Obliczenia:
ms=20%*500g/100%
ms=100 g
Zadanie 7
Dane:
V=2 dm3=2000 cm3
Cp=10%
d=1,115 g/cm3
Szukane:
ms=?
ms=Cp*d*V/100%
Obliczenia:
ms=10%*1,115 g/cm3*2000cm3/100%
ms=223 g
Zadanie 8
Dane:
mr1=100 g
Cp1=2%
mr2=50 g
Cp2=0,5%
mr3=100g+50g=150g
Szukane:
ms1=?
ms2=?
ms3=?
Cp3=?
ms1=Cp1*mr1/100%
ms2=Cp2*mr2/100%
ms3=ms1+ms2
Cp3=ms3*100%/mr3
Obliczenia:
ms1=2%*100g/100%
ms1=2 g
ms2=0,5%*50g/100%
ms2=0,25 g
ms3=2g+0,25g
ms3=2,25 g
Cp3=2,25g*100%/150g
Cp3=1,5%