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29 July, 06:25

Two different compounds are formed by the elements nitrogen and oxygen. The first compound, compound P1, contains 64.17% by mass nitrogen and 35.73% by mass oxygen. The second compound, compound P2, contains 47.23% by mass nitrogen and 52.79% by mass oxygen. What is the ratio of nitrogen to a fixed mass of oxygen for the two compounds?

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  1. 29 July, 06:49
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    To solve the problem, we must know the kind of compounds we are dealing with.

    For the first compound, P1 and second compound P2:

    N O N O

    Mass percent 64.17 35.73 47.23 52.79

    Atomic mass 14 16 14 16

    Number of

    moles 64.17/14 35.73/16 47.23/14 52.79/16

    4.58 2.23 3.37 3.30

    Simplest

    ratio 4.58/2.23 2.23/2.23 3.37/3.30 3.3/3.3

    2 1 1 1

    P1 compound is N₂O

    P2 compound is NO

    These are the compounds,

    In N₂O = 28:16

    NO = 14:16

    This is the ratio of nitrogen to a fixed mass of oxygen for the two compounds.
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