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    The molar mass of an oxide of nitrogen is 76 g mol–1.
    Deduce the molecular formula of the oxide.
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    (Original post by Lid-the-squid)
    The molar mass of an oxide of nitrogen is 76 g mol–1.
    Deduce the molecular formula of the oxide.
    14x + 16y = 76
    x, y > 0
    x, y are integers

    I presume that there is only one combination of x and y which works.

    Try starting at 76, taking away 16 until you get a multiple of 14.
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    Yep and its N2O3!
    14(2)+16(3) = 76!
 
 
 
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