When you calculate ΔH using bond dissociation energies, you often get a slightly different answer than if you experimentally determine ΔH from a calorimetry experiment (See chapter 5). Why do you think this is so? Give an example of a reaction where you think that gas phase bond energy calculations might not be as accurate as a calorimetry experiment done in aqueous solution.

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.