Which outcome occurs when bonds between atoms are broken or formed? a. a physical change b. an element increasing in size c. a chemical change d. a change of state

put the answers   and i could answer.

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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