With reference to the Chemistry Put to Work box on explosives, (a) Use bond enthalpies to estimate

Question:

With reference to the "Chemistry Put to Work" box on explosives,
(a) Use bond enthalpies to estimate the enthalpy change for the explosion of 1.00 g of nitroglycerin.
(b) Write a balanced equation for the decomposition of TNT. Assume that, upon explosion, TNT decomposes into N2 (g), CO2 (g), H2O (g), and C (s).