" When Fe metal is rusted,it is : "

When Fe metal is rusted then Fe is:

When iron is rusted, it is

When iron is rusted, it is

When iron is rusted, it is

When iron is rusted, it is

Which metal rusts?

If a piece of iron gains 10% of its weight due to partial rusting into Fe_(2)O_(3) the percentage of total iron that has rusted is: