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What is the percent composition of oxygen in Iron(III) oxide? (Round to three sig figs)

Fe2O3 159.7g/mol
Fe =55.85 x 2 =111.7 g/mol
O = 16.00 x 3 = 48.00 g/mol


____% O

What is the percent composition of oxygen in IronIII oxide Round to three sig figs Fe2O3 1597gmol Fe 5585 x 2 1117 gmol O 1600 x 3 4800 gmol O class=

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30.1%

do not ask why it just is.

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