What is role of iron in chemical reaction? 1. initiates it
2. completes faster
3. slow down it
4. heat​

Which is true of the reactants in this displacement reaction? fe + 2hcl fecl2 + h2 a. the reactants are located to the left of the arrow in the chemical equation. b. the reactants contain 1 iron atom, 2 hydrogen atoms, and 1 chlorine atom. c. the reactants are the atoms, molecules, or compounds formed in the reaction. d. the reactants have the same physical and chemical properties as the products.

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