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A mixture of sodium chloride(NaCl) and a...

A mixture of sodium chloride(NaCl) and anhydrous sodium carbonate `(Na_(2)CO_(3))` has a mole ratio, `2:1`. It is dissolved in water and treated with `BaCl_(2)` solution. The mass of `BaCO_(3)` precipitated is 197 gm.
Calculate the mass (in gm) of NaCl in the mixture.

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