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Posted by on Saturday, September 3, 2011 at 4:10pm.

This has to do with law of conservation of mass I believe but it stumps me. 50g or iron reacts with 21g of oxygen to form how many gram of iron oxide? Is the answer 71g or 29g

  • chemistry - , Saturday, September 3, 2011 at 7:37pm

    see your other post.

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