Question

Why the weight of iron increase after rusting​

Answer 1

Answer:

Beacuse a layer of rust is formed on it..

Explanation:

when iron gets rusted a layer of reddish patches a formed whichbhas weight and thus, after rusting weight of iron increases

Answer 2

$\bf\huge\underline\mathtt\red{Answer}$

The rusted iron is nothing but iron-oxide. Iron in the presence of moisture absorbs oxygen from the atmosphere and forms iron oxide. The weight gain is equal to the weight of oxygen absorbed.