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2014-05-06T16:10:14+03:00
CM=ro*10*c%/masa molara H2SO4
c%=cM*masa molara H2SO4/ro*10=5*98/1,29*10 =>c% = 37,9845 % 
masa molara H2SO4 = 2+32+4*16=98 g/mol