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At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

The conventional equilibrium constant expression (kc) for the system below is: 2icl(s) ⇄ i2(s) + cl2(g) [cl2] ([i2] + [cl2])/2[icl] [i2][cl2]/[icl]2 none of the listed answers are correct [i2][cl2]/2[icl]

One does not belong why? ice, gold ,wood ,diamond and table salt