Approximately how many moles of N2 are in 200 moles of clean dry air?

Do atoms make up all matter

Which of the following properties of water allows an insect to "climb" up a tube? Capillary action Cohesion Adhesion Density

How is matter conserved in the carbon cycle? A. Carbon absorbs energy and later releases the same amount of energy. B. Carbon changes from one form to another, but the total amount of carbon remains the same. C.

What is the correct name for the compound, P2O5?

An element's square on the periodic table, the number with the greatest value represents the

Consider two solutions, solution a and solution b. [h+] in solution a is 370 times greater than that in solution b. part a what is the difference in the ph values of the two solutions?

All of the following are possible sources of error in a scientific investigation except for O measuring materials such as mass and volume incorrectly. o recording experimental data incorrectly. o having a constant in your experiment.

Do polyatomic ions have fixed charges?

Which type of organism is used to make bread rise when baking? A. plants B. protists C. yeast D. bacteria

How many particles are in 3.55 moles of Aluminum Sulfate