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Sodium carbonate of 92% purity is used i...

Sodium carbonate of 92% purity is used in the reation
`Na_(2)CO_(3)+CaCl_(2)toCaCO_(3)+2NaCl`.
The number of grams of `Na_(2)CO_(3)` required to yield one gram of `CaCO_(3)` is (GAM of Na=23,Ca=40 , C=12, O=16 )
(A) 8.5g (B) 10.5g (C) 11.52g (D) 1.152g

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