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0.015 g of finely powered Mg(s) are added to 10.00 mL of 1.042 M HCl in a well of a Styrofoam block calorimeter with Kcal= 5.9 J/oC. The temperature of the acid solution increases from 24.2 oC to 29.9 oC. Calculate deltaH for the reaction that occurred.

a. -386 kJ/mol
b. -238 J/mol
c. -272 J/mol
d. -26.1 kJ/mol
e. -441 kJ/mol

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