What are the constituants of air, urine, cocoa_cola, milk, seawater and crudeoil

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]

Write a balanced equation showing the formation of copper (ii) nitrite from its elements

The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as