Which of the following is true about a scientific theory? a. a theory is a proposed explanation for a hypothesis b. a theory can be changed to explain new observations or experimental results c. a theory can be formed after a single experiment d. a theory can never be changed

A. A theory is a proposed explanation for a hypothesis

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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