Achagee
Answered

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An iron bar initially weighed 643 g. However, after the bar had been standing in moist air for a month, exactly 16.0 % of the iron had turned to rust (Fe2O3). Calculate the final mass of the iron bar and rust.

The balanced equation for this chemical process is:

4Fe + 3O2 = 2Fe2O3


Sagot :

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