Atoms that are isotopes of each other have different numbers of

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)

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

Is a pencil falling to the floor anon contact force, a force, or a contact force