4. In the simulation, what happened to the stream as the water table dropped? What will happen to the groundwater if a pollutant is added to the stream?

They are all decomposition reactions.

Try adding 700% because of the x in y

In reversible reaction chemistry equilibrium is attained when the forward and reverse reactions are taking place at the same rate, thus, the concentrations of reactants and products remain the same. a reversible reaction is a chemical reaction where the reactants form products that, in turn, react together to give the reactants back. in irreversible reactions on the other hand, the reactants react to form the products, which cannot revert back into reactants.

It's about -20°c to -15°c.