Jenny has two kids: An 8-year-old boy who weighs 60 pounds and a 12-year-old girl who weighs 90 pounds. She is pushing
both of them on separate swings.
In order for them to be swinging at the same velocity, which
child's swing should she push with greater force? Why?

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: