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The density of 3M Na2S2O3 is 1.25 g/cc. ...

The density of 3M `Na_2S_2O_3` is 1.25 g/cc. Calculate the mole fraction of `Na_2S_2O_3` and molality of thiosulphate.

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The correct Answer is:
(a) 0.065 and (b) 7.73
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