Need help fasttt Find the mass in grams of 2.00 * 10 ^ 23 molecules of F 2 (1 mole=Molar mas F 2 )(1 mole=6.02*10^ 23 molecule )

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.