This is how fluorine appears in the periodic table. Which is one piece of information that "9” gives about an atom of fluorine?

The atomic mass is different than the atomic number, and the number of neutrons is the difference between the atomic mass and the atomic number.

the atomic number
the atomic mass
the mass of protons
the number of neutrons

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 moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate

Nitric acid is often manufactured from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming of natural gas, in a two-step process. in the first step, nitrogen and hydrogen react to form ammonia: