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20 February, 02:52

An iron bar has a mass of 537 g. After the bar had been standing in air for a month, exactly one-eighth of the iron turned to rust (Fe2O3). Calculate the final mass of the iron bar and the rust.

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  1. 20 February, 05:07
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    The answer to your question is the mass of Iron bar = 469.87 g

    mass of rust = 67.13 g

    Explanation:

    Data

    mass of Iron bar = 537 g

    1/8 turn to rust

    final mass of Iron bar = x

    final mass of rust = ?

    Process

    1. - Divide the total mass by eight (numbers of parts)

    537g / 8 = 67.13 g

    2. - The final mass of rust is 1/8 = 67.13 g

    3. - Calculate the final mass of the Iron bar

    67.13 x 7 = 469.87 g
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