For each row in the table below, decide whether the pair of elements will form a molecular compound held together by covalent chemical bonds

1- yes

  HBr--hydrogen bromide

2- no

  BaBr₂barium bromide  

3- yes

NCl nitrogen chlorine  

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

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