The pot of water on the hot stove begins to boil rapidly. A glass lid is placed on the pot and water droplets begin forming on the inside of the lid. What best describes what happened?
A. Steam cools and water molecules moved closer together.
B. Water from outside leaked into the pot.
C. Hydrogen and oxygen combined to form water.
D. Steam combined with the air to wet the inside of the lid.
and

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation:

a chemical reaction happens

explanation: