PLEASE HELP. In a bomb calorimeter, 12.8g of magnesium metal are burned in excess oxygen to give magnesium oxide.
2Mg(s)+O_2(g)-2MgO(s)
a. Using the heats of formation of the reactants and products, calculate the molar enthalpy change of the reaction in kJ/mol
b. Determine the total heat released by burning 12.8 g of the metal.
c. If the heat capacity of the calorimeter is 907J/C degrees, how much will the calorimeter temperature rise by?

Any help would be greatly appreciated, please show your work.

Question

PLEASE HELP. In a bomb calorimeter, 12.8g of magnesium metal are burned in excess oxygen to give magnesium oxide. 
2Mg(s)+O_2(g)->2MgO(s)
a. Using the heats of formation of the reactants and products, calculate the molar enthalpy change of the reaction in kJ/mol
b. Determine the total heat released by burning 12.8 g of the metal. 
c. If the heat capacity of the calorimeter is 907J/C degrees, how much will the calorimeter temperature rise by?

Any help would be greatly appreciated, please show your work.