Which of the following statements is true about fuel cells?
A. Fuel cells are inexpensive to produce.
B. Fuel cell vehicles are almost as common as gasoline powered vehicles.
C. Fuel cells are powered by natural gas.
D. Fuel cells don't release greenhouse gases.

If the particles in a sample of matter have an orderly arrangement and move only in place, the sample is a

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

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.