20 points and mark brainiest

a student made a graph to show the progress of a reaction over time. the student forgot to label the y-axis of the graph.

what best explains the label that the student should use on the y-axis?

reaction rate, as the rate of forward and backward reactions become the same at equilibrium.

concentration, as the concentration of reactants and products become equal at equilibrium.

reaction rate, as the rate of forward reaction increases and the rate of backward reaction decreases with time.

concentration, as the concentration of products decreases and that of reactants increases over time.

Answer : The correct option is, Concentration, as the concentration of reactants and products become equal at equilibrium.

Explanation :

As we know that as a chemical reaction proceeds, the concentration of the reactants keep on decreasing while those of the products keep on increasing. The rate of reaction is also decreases. That means the rate of reaction is directly proportional to the concentration of the reactants per unit time. The graph plot between the concentration and the time.

Equilibrium point : It is the point where the concentration of the reactant and the products become equal.

From the given graph we conclude that, the concentration of reactants decreases and the concentration of products increases and the at a specific point the the concentration of reactant and the products becomes equal and that point is known as the equilibrium point.

Hence, the correct option is, Concentration, as the concentration of reactants and products become equal at equilibrium.

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.