Which statement best describes the model that shows a compound? a model x shows a compound because there are two different types of atoms. b model x shows a compound because two different atoms are chemically bonded together. c model y shows a compound because there is more than one type of atom. d model y shows a compound because each pair of matching atoms can form a chemical bond.

B

Explanation:

The definition of a compound, is a chemical substance containing two or more elements chemically bonded together.

Model X clearly shows a compound because there are many substances which have two elements chemically bonded to each other.

Model Y does not show a compound because although there are three different atoms, they are not chemically bonded together. This model would most likely represent a solution.

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: