How many liters of hydrogen gas, at STP, will be produced if 4.5 g water are decomposed through electrolysis, the process of adding electricity to a product to create a chemical change?

C. chemical changeshope i : )

Remember that rust prevented by placing a sacrificial electrode in electrical contact with the iron. the sacrificial electrode must be composed of a metal that  oxidizes  more easily than iron (that is, it must be below iron in table 18.1).