What was the plum-pudding atomic model

An experimental procedure requires a 10 ml of acid to be dissolved

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.