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A compound H(2)X with molar weight of ...

A compound `H_(2)X` with molar weight of 80 g is dissolved in solvent having density of `0.4 gm L^(-1)`. Assuming no change in volume upon dissolution, the molality of a 3.2 molar solution is :

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Molarity `=3.2M`
Let volume fo solvent `=1000ml,` no. of moles of solute `=3.2`
`:.` weight of solvent `=400g`
`:.` molality `=3.2/400xx1000=8`
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