Initially, you have two containers with 10 mL of water at 20°C.
David decides to heat up the water, while Chris cools the water. Who would have a greater volume of water?

Chris.

Explanation:

When water reaches a certain temperature, it starts to boil and lets off steam, decreasing the volume. When water freezes, however, it increases in volume. Therefore, Chris would have a greater volume of water.

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: