Odpowiedź:
28%
Wyjaśnienie:
Dane: Szukane:
mr1=120g Cp3=?
Cp1=20%
mr2=80g
Cp2=40%
Cp = ms*100%/mr
ms1 = Cp1*mr1/100%
ms1 = 20%*120g/100%
ms1 = 24g
Cp = ms*100%/mr
ms2 = Cp2*mr2/100%
ms2 = 40%*80g/100%
ms2 = 32g
Cp3 = ms3*100%/mr3
ms3 = 24g + 32g
ms3 = 56g
mr3 = 120g + 80g
mr3 = 200g
Cp3 = 56g*100%/200g
Cp3 = 28%