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One gram of an alloy of aluminium and ma...

One gram of an alloy of aluminium and magnesium when heated with excess of dil. `HCI` forms magnesium chloride, aluminium chloride and hydrogen. The evolved hydrogen collected over mercury at `0^(0)C` has a volume of `1.2` litre at `0.92 atm` pressure. Calculate the composition of the alloy.

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The correct Answer is:
`Al=54.87%, Mg=45.13%`
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