When a mixture of NaCl and NaBr is heate...

When a mixture of NaCl and NaBr is heated with `H_(2)SO_(4)`, the halogen components are liberated as their hydracids leaving `Na_(2)SO_(4)` as the residue. In an experiment, the mass of `Na_(2)SO_(4)` left is equal to the mass of `(NaCl+NaBr)` taken at the begining of the experiment. calculate the percentages of NaCl and NaBr in the given mixture.

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