Calculate the number of mole of Na(2)S(2...

Calculate the number of mole of `Na_(2)S_(2)O_(3)` that will react with `I_(2)` obtained when 1 mole of `K_(2)Cr_(2)O_(7)` reacts with excess of Kl in acidic medium.

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`Cr_(2)O_(7)^(2-)+14H^(+)+6Ito2Cr^(3+)+7H_(2)O+3I_(2)`
`3I_(2)+6Na_(2)S_(2)O_(3)to3Na_(2)S_(4)O_(6)+6NaI`

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