Question

Se amesteca 1600 g solutie cu concentratia 60% cu 300 g apa .calculati concentratia solutiei finale.

Answer 1

1600+60+300=1960 g

Sper sa te ajute!

Answer 2

c1=60%
ms1=1600g
m apa(ad)=300g
c2=?


c1/100=md1/ms1
60/100=md1/1600
md1=60*1600/100
md1=60*16
md1=960g

c2/100=md2/ms2
md2=md1=960g (ca adaugi doar apa)
ms2=ms1+m apa(ad)= 1600+300=1900g
c2/100=960/1900
c2=960*100/1900
c2=960/19
c2=50,52%

Sper ca te-am ajutat :)