enthalpy change for the reaction per mole....?

Question

If 1.86 g MgO is combined with 100.0 mL of 1.00 M HCl (density 100.0 g/mL) in a coffee cup calorimeter, the temperature of the resulting solution increases from 21.3 °C to 35.7 °C. Calculate the enthalpy change for the reaction per mole of MgO. Assume that the specific heat capacity of the solution is 4.18 J/g·K.

a.-28.3 kJ
b.-6.13 kJ
c.-613 kJ
d.-133 kJ
e.-329 kJ

Answer 1

c.-613 kJ

Answer 2

Remove Your Moles, Warts & Skin Tags in 3 Days
Easily, Naturally And Without Surgery