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Chemistry

The vapour density of carbon dioxide (C = 12 and O = 16) is ……………

  1. 32
  2. 16
  3. 44
  4. 22

Stoichiometry

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Answer

22

Reason — Molecular weight of carbon dioxide = 12 + 2(16) = 12 + 32 = 44 g

Vapour density of gas =

Molecular weight2=442=22 g\dfrac{\text{Molecular weight}}{2} \\[0.5em] = \dfrac{44}{2} \\[0.5em] = 22 \text{ g}

Hence, vapour density of carbon dioxide is 22 g

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