Răspuns:
Explicație:
1.ms1=300 g md=c1*ms1/100=10*300/100=30 g
c1=10 %
c2=25 % ms2=md*100/c=30*100/25=120 g
m H2Oevap =? mH2Oevap=ms1-ms2=300-120=180g
2. ms1=200g md1=c1*ms1/100=40*200/100=80 g
C1=40 %
ms2=300g md2=C2*ms2/100=20*300/100=60 g
c2=20 % mdf=md1+md2=80 g+60 g=140 g
cf=? msf= ms1+ms2=200+300=500g
cf=mdf/msf*100=140/500*100=28%
