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78. Zinc dissolves in hydrochloric acid to yield hydrogen gas: Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g) When a 12.7 g chunk of zinc dissolves in

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78. Zinc dissolves in hydrochloric acid to yield hydrogen gas: Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g) When a 12.7 g chunk of zinc dissolves in 500 mL of 1.450 M HCI, what is the concentration of hydrogen ions remaining in the final solution? A. 0.776 M B. 0.388 M C. 0.674 M D. 1.06 M E. OM rof. A

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