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2014-03-30T21:32:27+03:00
%X=masa halogen/masa halogenura * 100=>masa halogen = %X * masa halogenura/100 => masa halogen = 71,43 * 224 / 100 = 160 g halogen
masa molara halogen = 160 g/mol=>2x=160 (pt ca este halogen are 2 atomi in molecula)=>x=80 g/mol=> Bromul
224-160=64 g =>masa molara=64g/mol=> Cuprul
Halogenura este bromura de cupru!!!

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