For the readion 2Na + Ch> 2NaCl, how many grams of Ch are required to read completely with 450 g Na 71.6g
6.09g
3.54g
21.1g

The air exhaled from the lungs of a smoker has a concentration of 24 ppm co. express the concentration as a percent.

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

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.