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     EduGorilla 
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    A mixture of Al and Zn weighing 1.67 g was completely dissolved in acid, and the evolved 1.69 litres of hydrogen gas was measured at 273 K and one atmosphere pressure. The respective masses of Al and Zn in the original mixture were

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    1. 1.25 g, 0.42 g

    2. 0.42 g, 1.25 g

    3. 1.25 g, 4.2 g

    4. 12.5 g, 4.2 g

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