How much more acidic is a solution with a pH of 1 than a solution with a pH of 3

Which best describes why nh4+ can form an ionic bond with cl-?

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.

Which statement best describes what happens when molecular compounds melt