And this one too, i really need help

Kc = 0.040 for the system below at 450oc. if a reaction is initiated with 0.40 mole of cl2 and 0.40 mole of pcl3 in a 2.0 liter container, what is the equilibrium concentration of cl2 in the same system? pcl5(g) ⇄ pcl3(g) + cl2(g)

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

Apush or pull that moves or changes and object when to objects touch