Aneutron walks into a gas station to buy some snacks. he ask the cashier ,"how much"? the cashier replies,"for you? no charge." i don't understand. what this means ?

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:

by cartels in other countries, shipped by air, mail, or land. i cant really see your answer choices : /