In a laboratory, H2 gas can be produced by adding which of the following to a 1-M HCl solution? I. Mg(s) II. Zn(NO3)2(s) III. Na2CO3(s)

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In a laboratory, H2 gas can be produced by adding which of the following to a 1-M HCl solution? I. Mg(s) II. Zn(NO3)2(s) III. Na2CO3(s)