Which physical quantity is not used when determining the stoichiometry in this experiment?

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]

What is the atomic number of an atom that has 6 protons

How does climate change cause the ocean's thermohaline current to slow down?