Hydrogen burns in air to form steam. 2H (g) + O 2H 0(g) Use bond energies to calculate H. Type in the correct answer.
Step 1.
Rewrite the equation showing bonding
2H -H + O = O   = 2 H O
Step 2.
One H -H gives x 436 = kj
Step 2.
Two bonds of H -H gives x 436 = Kj
One bond of O=O gives x 489 = Kj/Mole
Total energy applied to break bonds Kj