Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a 0.17 gram piece of metal and combine it with 69.1 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 59.79 g/mol, and you measure that the reaction absorbed 176 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant? Enter your answer numerically to three significant figures in units of kJ/mol.

Question

Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g).

You weigh out a 0.17 gram piece of metal and combine it with 69.1 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 59.79 g/mol, and you measure that the reaction absorbed 176 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant?

Enter your answer numerically to three significant figures in units of kJ/mol. 

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