Iron combines with oxygen to form rust. given the chemical reaction, how many grams of 4fe + 3o2 would produce 10 g of rust? a) 7 g b) 10 g c) 30 g d) 70 g

B)10 g

Explanation:

If 10 grams of reactants were consumed, then 10  grams of rust should be formed.

If we look at the reactions between oxygen and iron, they can happen in two ways:

Even if the reaction goes like first way or second way, in both cases the reaction should follow the Law of Conservation of Matter. As per this law, matter is neither created nor destroyed but just changed in form during a chemical reaction.

If 10 grams of reactants were consumed, then 10  grams of rust (either Ferrous Oxide or Ferric Oxide) must be produced for the reaction to obey the Law of Conservation of Matter.

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