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16 February, 10:30

What is the weight percent of each O in SiO^2?

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  1. 16 February, 13:44
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    53.2%

    Explanation:

    Write the mass of the elements in your molecule:

    Mass of Si in 1 mol SiO2 = 28.1g

    Mass of O in 1 mol SiO2 = 16x2g = 32g

    Now find the mass of your compound

    Mass of compound = 28.1+32=60.1

    Divide each element's mass by the mass of the compound to find the percent by mass following this formula:

    % by mass = (mass of element/mass of compound) x 100

    % by mass of oxigen = (32g/60.1) x 100

    % by mass of oxigen = 53.2%

    I hope you find this information useful and interesting! Good luck!
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