Which salt solution is more concentrated, solution a, which contains 18g of salt in 6l of water, or solution b, which contains 24g of salt in 12l of water? explain?

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth. what is the independent variable for this experiment?

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.