32G of pure sulfur was reacting with 56G of pure iron metal to create how much iron sulfide

Esign techniques and materials that reduce the negative environmental impact of a structure are referred to as

How are isotopes of the same chemical element alike? how are they different?

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.