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A chemical reaction takes place in a 100 gram water bath (C=4.2J g-1 °C-1) and the...

A chemical reaction takes place in a 100 gram water bath (C=4.2J g-1 °C-1) and the temperature rose 6.3 °C. If 0.08 mols of substance A reacted to cause the temperature change according to the reaction below what would be the molar enthalpy of that reaction in kJ/mol? 3 A --> 1 B + 1 C

0.158 g of HCl is reacted with excess Mg. When the reaction occurs the temperature of the 100 mL solution increased 7.2 oC. Calculate the molar enthalpy of the reaction. You may assume the solution has a density of 1.00 g/mL and a heat capacity of 4.2 J/gK. Mg + 2 HCl --> MgCl2 + H2

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