2.(4 pts) Use bond energies listed in Table 10.3 on page 422 of the text book to calculate AH of the following balanced reaction:
2 C2H2(g) + 5 O2(g) → 4 CO2(g) + 2 H2O(g)
Lewis structures without lone pairs: H-C=C-H, O=0,O=C=0, H-0-H