List these terms from the smallest level to the largest: population, organism, ecosystem, community

The diagram above shows a wind turbine. How does a wind turbine produce electricity? A) Energy from the Sun turns the rotor blades that turn the generator to produce electricity.

A mixture of oxygen, hydrogen and eater vapor has a total pressure of 684 mm Hg. The partial pressure of oxygen is 380 mm Hg and that of hydrogen is 0.100 atm. That is the partial pressure of the water vapor?

A shoe store sells a foot cream that claims to relieve foot pain. Which is the best source to use when evaluating this claims? A. Someone who works at the store B. The website of the company that makes the foot cream C.

Does "valence electrons" have a charge?

Consider again the solution made by diluting 10.0 mL of the 0.50 M NaCl by adding distilled water until 100 mL of solution are produced. Has the concentration of the diluted salt solution increased, decreased, or remained constant?

The equation A + BX ® AX + B is the general equation for a a. double-replacement reaction. c. replacement reaction. b. decomposition reaction. d. combustion reaction.

he Food and Drug Administration (FDA) mandates that all vinegar sold in the United States must have a minimum concentration of 4% acetic acid by mass. Calculate the minimum molarity of acetic acid in vinegar according to this standard.

Which of the following is a postulate of the kinetic-molecular theory? A. Gases are made up of particles that act like small, soft spheres that are always moving in a calculated fashion. B.

An atom's outermost electron arrangement determines how it interacts with other atoms. Which of the following atomic structures would be most likely to form an ionic bond? A. neon, which has eight outer electrons B.

The main acid in the stomach is hydrochloric acid (HCl). Which chemical equations show a reaction that occurs when someone takes an antacid? Check all that apply.