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Determina concentratia procentuala a unei soluti ob prin amestecarea a 300g de saramura de concentratia 29% cu 400g apa..

Răspuns :

ms1 - 300 g
c1-29
c2=?
. md x 100
c2= ---------------
. ms2
. 29
. (------ x 300 g) x100
. 100
c2= ------------------------------
. 300g + 400g
. 8700g
c2= ------------
. 700g
c2= 12,43.