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in cele 2 sticle se gaseste otet de concentratii diferite de aced acetic 500 g ,9% si 1000g si 6%.Ce masa de acid acetic se afla in fiecare sticla?

Răspuns :

c = md*100/ms
md1 = c1*ms1/100 = 500*9/100 = 45 g acid
ms2 = c2*ms2/100 = 1000*6/100 = 60 g acid