Why will sugar dissolve faster in hot tea than it will in cold tea?

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.

In which phase of mitosis do the spindle fibers pull the chromosomes apart to opposite sides of the cell ?

An alpha particle is: a hydrogen atom a nucleus of helium two neutrons an electron