What can scientists gain clues about by analyzing the speed at which seismic waves travel? o the amount of magma in Earth's layers O the elements found in Earth's layers o the temperature of Earth's layers O the density of Earth's layers

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.

What are fossils of organisms that existed over a wide area but only for a limited time period called?