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The ratio of oxygen and nitrogen in air ...

The ratio of oxygen and nitrogen in air is about _____________ by volume.

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The ratio of oxygen to nitrogen in air `underline(7:26)` by volume.
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Knowledge Check

  • Percentage of nitrogen in air is about

    A
    0.78
    B
    0.69
    C
    0.21
    D
    0.03-.03%

  • The volume of oxygen present in 750 l of air is ___________

    A
    172.5 l
    B
    187 .5 l
    C
    157 . 5 l
    D
    255.5 l

  • The volume of oxygen present in 750 l of air is _____

    A
    172.5 l
    B
    187.5 l
    C
    157.5 l
    D
    225.5 l

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