Help with chemistry please!?

Which of the following conducts electricity best?
a. nonelectrolyte
b. weak electrolyte
c. strong electrolyte
d. distilled water

Which of the following statements is false?
a. If a reaction is endothermic, then its reverse would be exothermic.
b. As temperature decreases, reaction rate decreases.
c. An enzyme can have several different functions inside a living cell.
d. In order for reactants to form products, they must first collide.

When a liquid in a closed container reaches a state of equilibrium with its vapor, _________.
a. the number of molecules in the vapor state and the liquid state are equal
b. the number of molecules evaporating and condensing are equal
c. the processes of evaporation and condensation have ceased
d. the liquid is at the boiling point

29) ___________ will increase the rate a substance will dissolve in a solution?
a. stirring
b. grinding
c. heating
d. all of these