An sample of NaCl with 50% purity is added into aqueous solution havinig excess `AgNO_(3)`. AgCl precipitate is filtered, washed

An sample of NaCl with 50% purity is added into aqueous solution havinig excess `AgNO_(3)`. AgCl precipitate is filtered, washed and dired weighing 2.87gm. If the reaction yeild is 20%, then find the amount of sample.
A. 23.4gm
B. 11.7gm
C. 20gm
D. 12.8gm

An sample of NaCl with 50% purity is added into aqueous solution havinig excess `AgNO_(3)`. AgCl precipitate is filtered, washed and dired weighing 2.

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