For the following equilibrium CH4(g)  +   2 H2S(g)   ⇌   CS2(g)   +    4 H2(g) the equilibrium constant, K = 4.28  at 280.0 °C. Which of the following best describes the reaction at equilibrium?

The combustion of ammonia proceeds by the reaction           4 NH3    +    7 O2  →  4 NO2    +    6 H2O When the rate of appearance of H2O is 2.70 Ms-1, the rate of disappearance of O2 is          Ms-1

A sample of sodium bicarbonate, NaHCO3,  is placed in a closed 1.0 L vessel at 398 K and allowed to decompose unil it reaches equilibrium according to the following equation:                                         2 NaHCO3 (s)   ⇌  Na2CO3(s) +  H2O (g)   +  CO (g)      Kp = 0.250 What is the partial pressure of CO (in atm)  at equilibrium?

The following hypothetical reaction is zero order in A, second order in B, and first order in C: A +  B +  C  → products What is the correct rate law and the overall order of this reaction?    

Consider the following chemical reaction:                                    CO (g)  +  2 H2 (g)   ⇋   CH3OH (g)      Kc = 24.5 At equilibrium in a particular experiment, the concentrations of CO and H2 were 0.25 M and 0.78 M, respectively. What is the equilibrium concentration (in M) of CH3OH?  

The following hypothetical reaction is first order in A, second order in B, and zero order in C: A +  B +  C  → products What is the correct rate law and the overall order of this reaction?  

Given the equilibrium constant, Kc = 3.0 x 103 for the following reaction:           2 KCl (s)  +  3 O2(g)  ⇌  2 KClO3(s)  What is the concentration of O2 (in M) at equilibrium?

What is a key belief of Transcendentalism?  

In the poem “A Psalm of Life,” which statement expresses the theme of the poem?

The speaker in “Annabel Lee” says that he moved far away from Annabel’s grave so that he wouldn’t have to think so much about losing her.