A certain amount of a metal whose equivalent mass is 28 displaces \( 0.7 \mathrm{~L} \) of \( \m...

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A certain amount of a metal whose equivalent mass is 28 displaces \( 0.7 \mathrm{~L} \) of \( \mathrm{H}_{2} \) at S.T.P. from an acid hence mass of the element is
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