DO NOT FORGET TO WRITE A BALANCED CHEMICAL EQUATION!!
The combustion of one mole of octane (C8H18(l)) to produce carbon dioxide and liquid water has ∆Hr = −5471 kJ · mol−1 at 298K. What is the change in internal energy for this reaction?
1. −5460 kJ · mol−1
2. −5493 kJ · mol−1
3. −5471 kJ · mol−1
4. −5449 kJ · mol−1
5. −5482 kJ · mol−1
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