A large boulder falls from an underwater ledge and crashes on the floor of the ocean. A pod of dolphins is 800 meters away. Determine how long it takes for the sound of the crash to reach the dolphins.

A) 0.5 sec

B) 0.3 sec

C) 2.3 sec

D) 1.9 sec

Is "isotope" another name for an atom?

A solution containing large amounts of solute in comparison to solvent is what?

Parts of the water cycle labeled A through C. A: water moving from a lake into the clouds. B: clouds. C: water falling from clouds as rain and snow. What occurs at stage A? Water cools and turns to liquid. Water becomes runoff or groundwater.

Neon has three naturally occurring isotopes. They include Ne-20, atomic mass of 19.992 amu and percent abundance of 90.48%; Ne-21, atomic mass of 20.994 amu and percent abundance of 0.27%; Ne-22 has a mass of 21.991 amu and percent abundance of 9.

During Trial 2, what allowed you to determine that aluminum was the limiting reactant? Check all that apply. All of the copper dissolved. All of the aluminum dissolved. The solution turned clear.

What is the density of a marble that has a mass of 3.023 g and displaces 2.5 mL of water?

What are the two main systems we use for describing acids and bases?

Why do polar covalent bonds form?

What are some conditions that might control deposition

What are four basics states of matter