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A compound H(2)X with molar weigth of 80...

A compound `H_(2)X` with molar weigth of 80g is dissolved in a solvent having density of `0.4 g mol^(-1)`. Assuming no change in volume upon dissolution, the molarity 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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