The equilibrium constant, Kp, has a value of 6.5 × 10–4 at 308 K for the reaction of nitrogen monoxide with chlorine. 2NO(g) + Cl2(g)  2NOCl(g) What is the value of Kc?  

The reaction system CS2(g) + 4H2(g)  CH4(g) + 2H2S(g) is at equilibrium. Which of the following statements describes the behavior of the system if the partial pressure of carbon disulfide is reduced?  

A reaction has the rate law, rate = k[A][B]3.  What is the overall order of the reaction?

The equilibrium law for the system, CaO(s)  + CO2(g) CaCO3(s), is

In a chemical reaction system that has reached equilibrium, the concentrations of the various spe­cies are constantly changing even though the total number of molecules is unchanging.  ___ 

A reaction has the rate law, rate = k[A][B]2.  Which change will cause the great­est in­crease in the reaction rate?

Most heterogeneous reactions are slower than similar homogeneous reactions.  Which of the following best explains why?

For a chemical reaction, the rate constant at 250.0 °C is 0.00383 s‑1, and the activation energy is        22.40 kJ mol‑1.  Calculate the value of the rate constant at 335.0 °C.

What is the ecological name for the transitional zone between two well defined communities?

What of the following statements is TRUE about mutualistic relationships