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Oxygen is 36.8% of a compound. What is the mass in grams of a sample of the compound that contains 21.8 g of oxygen?

  • Chemistry -

    (grams O/grams compd)*100 = 36.8

    (21.8g O/grams compd)*100 = 36.8
    Solve for grams compd
    Or look at it another way,
    36.8% of what number = 21.8

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