Explain why the problem below is not the correct dimensional analysis setup to determine the mass of 4.50 moles of KCI.
4.50 moles KCI 39.10 g/1 mole KCI = 176 g KCI

English , i don't understand spanish.

Don’t know. don’t care.look it up on google

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).

Answer/when the cell uses energy;