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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 = 0.450 What is the partial pressure of CO (in atm)  at equilibrium?

Phophorous-32 decays by beta emission to form sulfur-32.   (In case the picture does not show: The picture indicated that 24 P-32 decayed to 3 P-32 in 9min. )  What is the decay constant, k, for P-32?

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?    

Given the Kc value for the following reaction at a particular temperature:                         SO2 (g) + ½ O2 (g) ⇋ SO3 (g)                  Kc = 9.75 What is the value of Kc for the new equilibrium below at the same temperature?                         2 SO3 (g) ⇋ 2 SO2 (g) + O2 (g)

Consider the following reaction:   BrO3⎻ (aq)   +  5 Br⎻(aq)  +  6 H+(aq)   →  Br2(aq)   +   H2O(l)     This reaction has the rate law:  

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?

The rate constant for a particular second order reaction is k = 0.0152 M−1 s −1 at 35°C.  If the initial concentration of reactant is 3.25 M, what is the concentration after 4 minutes? Hint: Make sure all units agree! 

Which of the following authors is most associated with Gothic literature in early America?  

According to the speaker in “Annabel Lee,” why did his lover die?

In American Gothic literature, the settings often feature: