Which of the following statements is false? a. the moon usually sets about 12 hours after it rises. b. the moon rises in the west and sets in the east. c. the full moon rises around sunset. d. the moon takes a little more than 29 days to orbit the earth.

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next