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Ce concentratie procentuala are solutia prin amestecarea a doua solutii,una de C=5%,iar cealalta de C=20% aaflate in raport masic?Doresc rezolvarea completa a problemei,altfel vor fi raportate!


Răspuns :

ms1/ms2=1/3⇒ms2=3ms1
msf=ms1+3ms1=4ms1
md1=ms1.c1/100=ms1/20
md2=ms2.c2/100=3ms1.c2/100=3ms1/5
mdf=md1+md2=13 ms1/20
c=mdf.100/msf=(1300ms1/20)/4ms1=16,25
cf=16,25%