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1) Calorimetry and stoichiometry. The minimum amount of heat needed to melt a 25g ice cube was 8400 J. For the reaction below, you conduct

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1) Calorimetry and stoichiometry. The minimum amount of heat needed to melt a 25g ice cube was 8400 J. For the reaction below, you conduct a calorimetry experiment and determine that 0.672 g of HCl and excess Zn(s) was just enough to melt all of the ice. What is the change in enthalpy of the reaction? Show your work. Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g)

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