Final answer:
KC stands for equilibrium constant in chemistry representing the ratio of product concentrations to reactant concentrations at equilibrium.
Step-by-step explanation:
KC stands for equilibrium constant in chemistry. It is a mathematical expression that represents the ratio of product concentrations to reactant concentrations at equilibrium. The value of KC indicates the extent to which a reaction proceeds. It can be calculated using the initial concentrations of reactants and the equilibrium concentration of the product. It can be expressed in terms of molar concentrations (Kc) or partial pressures depending on the state of the reactants and products.