In the reaction c7h16 + __o2 → 8h2o + 7co2, what coefficient should be placed in front of o2 to balance the reaction?
select one:
a. 7
b. 8
c. 11
d. no coefficient is needed

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.