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A mixture of Al and Zn weighing 1.67 g was completely dissolved in acid and evolved 1.69 litre of H2 at NTP.

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A mixture of Al and Zn weighing 1.67 g was completely dissolved in acid and evolved 1.69 litre of H2 at NTP. What was the weight of Al in original mixture? 

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Let a and b g be weight of Al and Zn in mixture a + b = 1.67 ...(1)

 

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