Help me this is due in 4 mins

Actually Welcome to the Concept of the Mass.

The amount actual matter in an object is called as Mass.

hence, D.) is the answer, Mass

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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