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25 April, 03:39

What is the empirical formula of a compound that contains 25.92 percent nitrogen and 74.07 percent oxygen?

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Answers (1)
  1. 25 April, 05:05
    0
    N2 O5

    Explanation!

    When given %, assume you have 100 g of the substance. Find moles, divide by lowest count. In this case you'll end up with

    25.92 g N 14.01 g N/mol N = 1.850 mol N

    74.07 g O 16.00 g O/mol O = 4.629 mol O

    The ratio between these is 2.502 mol O/mol N, which corresponds closely with N2 O5.
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