The oxygen in air causesiron to rust. iron and oxygen are what in this process, and rust is a(n).

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions. what elemental classification does oxygen belongto? done

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.