Question

a method used in prevent rusting in shape and underground pipeline involved connecting the iron to block or of more active metals such as magnesium this method is called cathodic protection how many moles of magnesium are present in 1 billion(1×10*9) atoms of magnesium​

Answer 1

A process known as cathodic protection can be used to prevent rust formation. The iron to be protected is attached to another metal such as zinc or magnesium, which give up electrons to oxygen more readily than does iron. The so- called sacrificial cathode will then corrode and the iron will not.