How many moles of magnesium are in 3.01 x 1022 atoms of magnesium?

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).

The answer is the third option extremely gradual

The answer would be 25.3

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