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Se amesteca 500g de solutie de zahar15% cu 300g solutie zahar 25% si cu 800g apa.Calculati concentratia solutiei finale.​

Răspuns :

Răspuns:

ms1=200g c1=20% ms2=300g c2=30% c3=md3×100/ms3 ms3=200+300=500g md3=20×200/100+30×300/100=40+90=130 c3=130×100/500=130/5=26%