How much energy is released by the combustion of 1.00 mol of octane, C8H18?

Answer 1

You can calculate this by
1. Write the equation and balance it.
2. Look up the delta Hf values in your text or notes for products and reactants
3. Then deltaHrxn = (n*DHproducts)-(n*DHreactants).
Post your work if you get stuck.