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3 April, 14:52

When powdered iron is left exposed to the air, it rusts. explain why the mass of the rust is greater than the mass of the powdered iron?

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  1. 3 April, 15:10
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    There is more surface area to rust even though microscopic. which is why there is more rust than iron
  2. 3 April, 15:19
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    Is it because the powered iron has a large surface area which means that per powdered iron there is a lot of rust which means that in the end the rust weighs more?
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