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2014-04-27T15:29:24+03:00
Md=c*ms/100=>md=700*10/100=70 g HCl
2 moli HCl = 2*36,5=73 g HCl
md final = 73+70=143 g HCl
ms final = 700 g solutie
c%=md/ms*100=143/700 * 100 = 20,42857 %