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  4. 0.44 g of a colourless oxide of nitrogen occupies 224 ml at STP. The molecular formula is

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Q. $0.44\, g$ of a colourless oxide of nitrogen occupies $224\, ml$ at STP. The molecular formula is

NTA AbhyasNTA Abhyas 2020Organic Chemistry – Some Basic Principles and Techniques

Solution:

Molecular weight $=\frac{\text { Weight }}{\text { Volume }} \times 22400\, ml$
$=\frac{0.44 \times 22400}{224}=44$
Hence molecular formula $= N _{2} O$.