Răspuns:
Explicație:
1.
a.
ms=500g sol.
md=150g zahar
c=?
c= md .100 : ms
c= 150 .100 : 500=30%
b.
md=500g
mapa= 2kg= 2000g
c=?
ms= md + mapa
ms= 500 + 2000=2500 g sol.
c= 500 . 100 : 2500=20%
c.
md=80g
Vs=153 mL
ro= 1,3075 g/mL
c=?
ms= ro . Vs
ms= 1,3075 g/mL . 153mL =200,0475 g
c= 80.100 : 200,0475=39,99%
d.
ms1=200g
c1=94%
ms2=400g
c2= 40%
cfinal
md1= c1.ms1 : 100
md1= 94 . 200 : 100= 188 g
md2= 40 . 400 : 100=160 g
mdfinal= 188 + 160=348
msf= 200 + 400=600g
cf= 348 .100 : 600=58%
