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Which of the following molecules have the same geometries?


A. NH2- and H2O
B. NH2- and BeH2
C. H2O and BeH2
D. NH2-, H2O, and BeH2



In which one of the following molecules is the central atom sp2 hybridized?


A. SO2
B. N2O
C. BeCl2
D. NF3
E. PF5


The following reactions occur at 500 K. Arrange them in order of increasing tendency to proceed to completion (least ® greatest tendency).


A. 2 < 1 < 3
B. 1 < 2 < 3
C. 2 < 3 < 1
D. 3 < 2 < 1
E. 3 < 1 < 2


If one starts with pure NO2(g) at a pressure of 0.500 atm, the total pressure inside the reaction vessel when 2NO2(g) 2NO(g) + O2(g) reaches equilibrium is 0.674 atm. Calculate the equilibrium partial pressure of NO2.


A. 0.152 atm
B. 0.174 atm
C. 0.200 atm
D. 0.326 atm
E. The total pressure cannot be calculated because Kp is not given.


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