Consider the following equilibrium process between dinitrogen tetrafluoride (N2F4) and nitrogen difluoride (NF2): N2F4(g) ↔ 2NF2(g) ΔH° = 38.5 kJ/mol

Which of the following changes produce more product (more NF2):

a.
Decreasing temperature.
b.
Decreasing the volume of the reacting mixture at a constant temperature.
c.
Adding a catalyst to the reacting mixture.
d.
If some N2F4 gas is removed from the reacting mixture at constant temperature and volume.
e.
If the pressure on the reacting mixture is decreased at a constant temperature.

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

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.

All cells are made of four types of acids, lipids, proteins, and carbohydrates.