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[" 17.A certain amount of a metal whose ...

[" 17.A certain amount of a metal whose equivalent mass "],[" is "28" displaces "0.7" L of "H_(2)" at S.T.P.from an acid "],[" hence mass of the element is "],[[" (1) "1.75g," (2) "0.875g],[" (3) "3.50g," (4) "7.00g]]

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