How does the use of synthetic products impact the natural resource from which they are derived?

The enthalpy of formation of water is -285.8 kj/mol. what can be inferred from this statement?

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.

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.