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    Chanachur's Avatar
    Chanachur Posts: 2, Reputation: 1
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    #1

    Jan 6, 2015, 02:15 AM
    A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.09
    A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the compound by weight.
    InfoJunkie4Life's Avatar
    InfoJunkie4Life Posts: 1,409, Reputation: 81
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    #2

    Jan 7, 2015, 12:20 PM
    Here's some tips:

    There are formulas that explain percent as a part to whole ratio, For each percent you are going to have 1/100th of the whole. Boron is .096/.24ths of the whole. How many percents equal Boron? Lets set up an equation.



    Give it a try, post your results, we can help from there.

    Try to set up the equation for percent of oxygen.
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