A compound is composed of the elements shown in the table below. Identify which statements are correct in determining how to name this compound

List four observations that indicate that a chemical reaction may be taking place

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.

Who discovered a pattern to the elements in 1869?