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2 June, 19:02

Find the formula for the compound that contains 72.40% iron and 27.60% oxygen.

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  1. 2 June, 19:26
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    Oxygen = 16

    Iron = 55.8

    16 x 27.6% = 4.4 / 4 = 1.1

    55.8 x 72.4% = 40.4 / 4 = 10.1

    1 oxygen and 10 iron, so Fe10 O
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