If the pH is 9, what is the concentration of hydroxide ion?

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?

How is the way a mixture is combined different from how a compound is combined?