(a) Select all of the correct statements about reaction rates from the choices below.

-The lower the rate of a reaction the longer it takes to reach completion.

-Reaction rate constants increase with increasing temperature.

-Reaction rates decrease with increasing temperature.

-Catalysts decrease reaction rates.

-Reaction rates are determined by reactant concentrations, temperatures, and reactant stabilities.

-Reactions involving very unstable combinations of chemicals have large rate constants.

-A balanced chemical reaction is necessary to relate the rate of reaction to the concentration of a reactant.